图片署名
讲义中的图表由我们制作,无需署名。以下图片经许可从网络复用——每张均标注作者、授权及来源。
A-Level 生物
01 · 细胞结构
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Animal cell structureMariana Ruiz (LadyofHats) · Public domain · 来源 -
Plant cell structureMariana Ruiz (LadyofHats) · Public domain · 来源 -
Average prokaryote cellMariana Ruiz (LadyofHats) · Public domain · 来源 -
Enterobacteria phage T2 transmission electron micrographSnaxMikn · CC BY-SA 4.0 · 来源
02 · 生物分子
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Kartoffel-StärkekörnerQuant8 · CC BY-SA 4.0 · 来源 -
1GZX HaemoglobinZephyris at English Wikipedia · CC BY-SA 3.0 · 来源
03 · 酶
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Plastic spoon n Laundry detergent n Washing powder in whiteLebacno · CC BY-SA 3.0 · 来源 -
yeastDavid Blaikie · CC BY 2.0 · 来源
04 · 细胞膜与物质运输
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SEM blood cellsBruce Wetzel (photographer). Harry Schaefer (photographer) · Public domain · 来源 -
Demonstration of osmosis using a potato osmometerKnowledge genome · CC BY-SA 4.0 · 来源
05 · 有丝分裂细胞周期
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Mitosis in Onion Root various stages (Metaphase)Natalierussell77 · CC BY-SA 4.0 · 来源
06 · 核酸与蛋白质合成
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Space-filling model of the DNA double helixUde · Public domain · 来源 -
DNA ExtractionJoo Nath · CC BY-SA 4.0 · 来源 -
DNA Double Helix by NHGRINational Human Genome Research Institute · Public domain · 来源
07 · 植物体内的运输
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Growth Rings tree rings 01Vijayanrajapuram · CC BY-SA 4.0 · 来源
08 · 哺乳动物体内的运输
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Diagram of the human heartWapcaplet (Eric Pierce) · CC BY-SA 3.0 · 来源 -
Human blood smearKeith Chambers · CC BY-SA 3.0 · 来源
09 · 气体交换
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Normal lung tissueYale Rosen from USA · CC BY-SA 2.0 · 来源 -
Human Lungs (NIH BioArt 231 - 630892)Courtesy of NIAID Ryan Kissinger · Public domain · 来源
10 · 传染病
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Plasmodium falciparum parasite in bloodMichaelZahniser · Public domain · 来源 -
Antibiotic sensitivity testDr Graham Beards · CC BY-SA 4.0 · 来源
11 · 免疫
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A neutrophil engulfing bacteriaVolker Brinkmann (NIAID) · CC BY-SA 3.0 · 来源 -
Normal Adult Blood SmearKeith Chambers · CC BY-SA 3.0 · 来源 -
Urine Pregnancy Test -PositiveAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源 -
Antibiotic sensitivity testDr Graham Beards · CC BY-SA 4.0 · 来源
12 · 能量与呼吸作用
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Mitochondria, mammalian lung - TEMLouisa Howard · Public domain · 来源 -
13 · 光合作用
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Cloroplasti ElodeaCimice50 · CC BY-SA 4.0 · 来源
14 · 稳态
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(20250417) Blood glucose meter 04Roy Zuo · CC BY-SA 4.0 · 来源 -
Sweating for stunning scenery 130719-Z-NO327-280Spc. Tyler Meister · Public domain · 来源
15 · 调节与协调
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Stained neurones under the microscopeTulemo · CC BY-SA 4.0 · 来源 -
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Venus Flytrap showing trigger hairsNoah Elhardt · CC BY-SA 2.5 · 来源 -
Human skeletal muscle tissue 1 - TEMLouisa Howard · Public domain · 来源
16 · 遗传
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Human karyotypeNational Cancer Institute · Public domain · 来源 -
17 · 选择与进化
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Peppered moth formsMartinowksy at Dutch Wikipedia (Original text: Maarten Sanne) · CC BY-SA 3.0 · 来源 -
Cepaea nemoralis pair banded shells· CC BY-SA 2.0 · 来源
18 · 分类、生物多样性与保护
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A coral reef on the Great Barrier ReefToby Hudson · CC BY-SA 3.0 · 来源 -
Aerial image of Grand Prismatic Spring (view from the south)Carsten Steger · CC BY-SA 4.0 · 来源 -
19 · 遗传技术
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Thermal cycler for PCRJuan Carlos Fonseca Mata · CC BY-SA 4.0 · 来源 -
vocab · 词汇训练器图片
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File:Heart numlabels.svgWapcaplet · CC BY-SA 3.0 · 来源 -
File:ArteryVeinCS.jpgFishtailBob · CC BY-SA 4.0 · 来源 -
File:PBB Protein ATP synthase image.jpgwww.pdb.org · Public domain · 来源 -
File:Heart numlabels.svgWapcaplet · CC BY-SA 3.0 · 来源 -
File:E coli at 10000x, original.jpgPhoto by Eric Erbe, digital colorization by Christopher Pooley, both of USDA, ARS, EMU · Public domain · 来源 -
File:Tramlines in a barley crop - geograph.org.uk - 1306062.jpgEvelyn Simak · CC BY-SA 2.0 · 来源 -
File:Nephron simple numbers.svgJmarchn · CC BY-SA 3.0 · 来源 -
File:Respiratory system complete en.svgLadyofHats, Jmarchn · Public domain · 来源 -
File:Pathology of the lung (cancer).jpgUnknown photographer · Public domain · 来源 -
File:Blood vessels-en.svgKelvinsong · CC BY-SA 3.0 · 来源 -
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File:Chromosome Terminology.pngChristinelmiller · CC BY-SA 4.0 · 来源 -
File:Chlorophyll a.svgDavid Richfield · Public domain · 来源 -
File:Paper chromatography in progress.jpgAmitchell125 · CC BY-SA 4.0 · 来源 -
File:Collagen (triple helix protein).jpgEric Hahn · CC BY-SA 4.0 · 来源 -
File:Phloem Cells.jpgChippolito · CC BY-SA 3.0 · 来源 -
File:Cotton boll maturing on Bobby Byrd's cotton plant in Hale County near Plainview, Texas. (24490395753).jpgUSDA NRCS Texas · Public domain · 来源 -
File:DNA double helix horizontal.pngJerome Walker · Public domain · 来源 -
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File:Psuedostratified epithelium animated.gifLaird Sheldahl · CC BY-SA 4.0 · 来源 -
File:Endomembrane system diagram en.svgMariana Ruiz LadyofHats · Public domain · 来源 -
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File:SEM Lymphocyte.jpgUnknown photographer/artist (False color modifications made by myself--DO11.10) · Public domain · 来源 -
File:Animal cell structure en.svgLadyofHats (Mariana Ruiz) · Public domain · 来源 -
File:Giemsa Stain Macrophage Illustration.pngNoah Smith · CC BY-SA 4.0 · 来源 -
File:Microtubule structure esp.pngWikimedia Commons: https://commons.wikimedia.org/wiki/File:Microtubule_structure.png · CC BY-SA 4.0 · 来源 -
File:Villi & microvilli of small intestine.svgBallenaBlanca · CC BY-SA 4.0 · 来源 -
File:Animal mitochondrion diagram et.svgLadyofHats, translated by ArtjomJemeljanovNERG · Public domain · 来源 -
File:Monocytes, a type of white blood cell (Giemsa stained).jpgDr Graham Beards · CC BY-SA 3.0 · 来源 -
File:Anopheles stephensi.jpegJim Gathany · Public domain · 来源 -
File:Complete neuron cell diagram en.svgLadyofHats · Public domain · 来源 -
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File:Nucleus Nucleolus and chromatin of animal cell.pngDan · CC BY-SA 3.0 · 来源 -
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File:Rough endoplasmic reticulum.JPGRlawson at English Wikibooks · CC BY-SA 3.0 · 来源 -
File:Atlantic salmon fish.jpgTimothy Knepp, U.S. Fish and Wildlife Service · Public domain · 来源 -
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File:Neuron figure fr.pngDominique222 · CC BY-SA 4.0 · 来源 -
File:Phloem.jpgClematis · CC BY-SA 3.0 · 来源 -
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File:Chromosome Terminology.pngChristinelmiller · CC BY-SA 4.0 · 来源 -
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File:Smooth muscle - histology.jpgJuan Carlos Fonseca Mata · CC BY-SA 4.0 · 来源 -
File:Soybean.USDA.jpg· Public domain · 来源 -
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File:Stratified squamous epithelium.pngJmarchn · CC BY-SA 3.0 · 来源 -
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File:Urtica dioica leaf cross section micrograph.zip.jpgMdantonio2005 · CC BY-SA 4.0 · 来源 -
File:Skeletal striated muscle.jpgNephron · CC BY-SA 3.0 · 来源 -
File:Taste bud esp.jpgNEUROtiker · CC BY-SA 3.0 · 来源 -
File:Telomere caps.gifU.S. Department of Energy Human Genome Program · Public domain · 来源 -
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File:Plant cell structure-en.svgLadyofHats · Public domain · 来源 -
File:Mitral valve prolapse subtypes.svgY. Coinblatt · CC BY-SA 4.0 · 来源 -
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File:Inferior vena cava ultrasound.gifTinss · CC BY-SA 4.0 · 来源 -
File:Heart numlabels.svgWapcaplet · CC BY-SA 3.0 · 来源 -
File:Venus Flytrap showing trigger hairs.jpgNoah Elhardt · CC BY-SA 2.5 · 来源 -
File:Yeast cells in wet mount of culture.jpgAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源
A-Level 商业
01 · 企业及其环境
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Bonn, Post-Tower -- 2017 -- 2128 (bw)Dietmar Rabich · CC BY-SA 4.0 · 来源 -
Retail outlets, High Street - geograph.org.uk - 7644448John Baker · CC BY-SA 2.0 · 来源 -
02 · 人力资源管理
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Young Woman in an InterviewAmtec Photos · CC BY-SA 2.0 · 来源
03 · 市场营销
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Shibuya CrossingLandry Miguel · CC BY-SA 4.0 · 来源 -
Branded retail displaytophomedesign · CC BY-SA 2.0 · 来源 -
04 · 运营管理
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Daiwa Logistics Tosu Logistics CenterPeka · CC BY-SA 4.0 · 来源 -
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05 · 财务与会计
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Euro Series Banknotes (2019)PawełMM · CC BY-SA 3.0 · 来源
06 · 企业及其环境(A Level)
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McDonalds Golden ArchesAnthony92931 · CC BY-SA 3.0 · 来源 -
Shipping containers at West Harbour in Jätkäsaari, Helsinki, Finland, 2008 OctoberKari Hakli · CC BY-SA 4.0 · 来源
07 · 人力资源管理(A Level)
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Team collaborating around a whiteboard in a modern officeVitaly Gariev · Unsplash License · 来源
08 · 市场营销(A Level)
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New World Supermarket During COVID-19 PandemicProtoKiwi · CC BY-SA 4.0 · 来源
09 · 运营管理(A Level)
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Factory Automation Robotics Palettizing BreadKUKA Roboter GmbH, Bachmann · Public domain · 来源
A-Level 化学
01 · 原子结构
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Scanning tunneling microscope (STM) 250 nm by 250 nm image of one-atom-thick silver islands grown on palladium (111) surfacePonor · CC BY-SA 4.0 · 来源 -
02 · 原子、分子与化学计量
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Acid and Base TitrationKengksn · CC BY-SA 4.0 · 来源
03 · 化学键
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Halite (rock salt) crystalDidier Descouens · CC BY-SA 4.0 · 来源 -
Methane-3D-balls· Public domain · 来源
04 · 物质的状态
05 · 化学能量学
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Daiso instant cold pack 300gphoto: Qurren (talk) Taken with Canon PowerShot G9 X · CC BY-SA 4.0 · 来源 -
06 · 电化学
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AA VARTA battery-side PNr°0782D-Kuru · CC BY-SA 4.0 · 来源 -
Rust on ironLaitr Keiows · CC BY-SA 3.0 · 来源
07 · 平衡
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Cobalt(II) chloride solutionsLeiem · CC BY-SA 4.0 · 来源 -
Yara-Werk bei Tagesanbruch 20115snake5 · CC BY-SA 4.0 · 来源
10 · 第2族
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Magnesium ribbon burningCapt. John Yossarian · CC BY-SA 3.0 · 来源 -
Limestone Cliffs, Little Ormes Head - geograph.org.uk - 7808316N Chadwick · CC BY-SA 2.0 · 来源
11 · 第17族
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Silver halide precipitatesRrausch1974 · CC BY-SA 3.0 · 来源 -
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Liquid Pool ChlorineMaksym Kozlenko · CC BY-SA 4.0 · 来源
12 · 氮与硫
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AerialViewPhotochemicalSmogMexicoCity 2Creator:Fidel Gonzalez · CC BY-SA 3.0 · 来源 -
Mossmorran chemical plant - geograph.org.uk - 5288385M J Richardson · CC BY-SA 2.0 · 来源
13 · AS Level 有机化学导论
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Crude oilGlasbruch2007 · CC BY-SA 3.0 · 来源 -
14 · 烃
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Gas stove blue flamesMarina Burity from Santo André, Brazil · CC BY-SA 2.0 · 来源 -
15 · 卤素化合物
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refluxMax1musmax · CC BY-SA 2.0 · 来源 -
Rotační vakuová odparkaMilda 444 · CC BY-SA 4.0 · 来源
16 · 羟基化合物
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Erlenmeyer TSB fermentation replicatesLuis Fernando Flores LAB · CC BY-SA 4.0 · 来源
17 · 羰基化合物
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TollensprobeTmv23 · CC BY-SA 3.0 · 来源 -
18 · 羧酸及其衍生物
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Synthetic vinegar bottlesSgroey · CC BY-SA 4.0 · 来源 -
19 · 含氮化合物
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Jana nylon stockings in packagingBevaringstenestene / Museumssenteret i Hordaland · CC BY-SA 4.0 · 来源 -
2021-09-05 AsparnZaya Museum FärberRobert Kropf · CC BY-SA 4.0 · 来源
20 · 聚合
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Polyethylene balls5Lluis tgn · CC BY-SA 3.0 · 来源 -
21 · 有机合成
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Anterone (cyproterone acetate) tablets in Australia, with three blister packsBlankEclair · CC BY-SA 4.0 · 来源 -
Pexeso děličkaMilda 444 · CC BY-SA 4.0 · 来源
22 · 分析技术
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BrukerDaltonics maXis1Mike25 Michael Willett · Public domain · 来源 -
23 · 化学能量学
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Daiso instant cold pack 300gphoto: Qurren (talk) Taken with Canon PowerShot G9 X · CC BY-SA 4.0 · 来源 -
HALIT X NaCl Natriumchlorid WÜRFEL KUBUS 50PHans-Joachim Engelhardt · CC BY-SA 4.0 · 来源
24 · 电化学
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Hofmann'scher Wasserzersetzungsapparat - Deutsches Museum VerkehrszentrumMattes · CC BY-SA 3.0 · 来源 -
Barrel Plating For Small PartsEncik Tekateki · CC BY-SA 4.0 · 来源
25 · 平衡
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PH Test StripsAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源 -
2015 Jaskinia Niedźwiedzia w Kletnie, szata naciekowa 26Jacek Halicki · CC BY-SA 4.0 · 来源
26 · 反应动力学
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CatalystsShubhrapdil · CC BY-SA 4.0 · 来源 -
Gas syringeUser:Geni · CC BY-SA 3.0 · 来源
27 · 第2族
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Drehrohrofen RohrdorfSchmidti · CC BY-SA 3.0 · 来源 -
28 · 过渡元素化学
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Coloured-transition-metal-solutionsNo machine-readable author provided. Benjah-bmm27 assumed (based on copyright claims) · Public domain · 来源 -
31 · 卤素化合物
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SPRAYING PESTICIDES - NARA - 544246 (cropped)John Messina · Public domain · 来源
32 · 羟基化合物
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Bar of carbolic soapSamBlob · CC BY-SA 3.0 · 来源 -
Phenol substance photoRillke · CC BY-SA 3.0 · 来源
33 · 羧酸及其衍生物
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Lemon - whole and splitIvar Leidus · CC BY-SA 4.0 · 来源 -
Regular strength enteric coated aspirin tabletsRagesoss · CC BY-SA 4.0 · 来源
34 · 含氮化合物
35 · 聚合
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Nailoni süntees 2Thctamm · CC BY-SA 3.0 · 来源 -
Bales of PET bottles closeupGrendelkhan · CC BY-SA 4.0 · 来源
A-Level 计算机科学
01 · 信息表示
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Single-digit seven-segment LED displayThe Pi Hut · Product image · 来源 -
Chinese Suanpan AbacusFelix Winkelnkemper · CC BY-SA 4.0 · 来源
02 · 通信
03 · 硬件
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Opened hard disk driveZzubnik · Public domain · 来源 -
Inside an SSDMichael Bemmerl · CC BY 3.0 de · 来源 -
Computer monitorDell · Product image · 来源 -
Wireless mouseLogitech · Product image · 来源 -
Computer keyboardLogitech · Product image · 来源 -
DDR5 RAM moduleCorsair · Product image · 来源 -
Epson Perfection flatbed scannerEpson · Product image · 来源 -
Laser printerBrother · Product image · 来源 -
FDM 3D printerCreality · Product image · 来源 -
USB microphoneLogitech · Product image · 来源 -
Stepper motorAdafruit · Product image · 来源 -
External optical disc driveASUS · Product image · 来源 -
Meta Quest 3 VR headsetMeta · Product image · 来源 -
ThermistorSparkFun · Product image · 来源 -
touchscreenRawpixel Ltd · CC0 · 来源 -
EPROM ChipWestonChants · CC BY-SA 4.0 · 来源 -
04 · 处理器基础
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CPU chipEric Gaba (Sting - fr:Sting) · CC BY-SA 3.0 · 来源 -
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Amstrad VSC386SXD V2.01Mister rf · CC BY-SA 4.0 · 来源
05 · 系统软件
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VirtualBox Windows 11 24H2 (Version 10.0.26100.1742.240906-0331) 04 02 2025 17 34 35OS: Microsoft Corporation Screenshot: PantheraLeo1359531 😺 (talk) · Public domain · 来源 -
OnePlus Nord smartphone displaying Android home screenGannu03 · CC BY-SA 4.0 · 来源
06 · 安全、隐私与数据完整性
07 · 伦理与所有权
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CCTV control room monitor wallMark Yeomans · CC BY-SA 4.0 · 来源 -
Ewaste-pileAvWijk · Public domain · 来源
08 · 数据库
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Hand in filing cabinetWatty62 · CC BY-SA 4.0 · 来源 -
Hard disk platters and headMfield, Matthew Field, http://www.photography.mattfield.com · CC BY-SA 3.0 · 来源
09 · 算法设计与问题求解
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Jigsaw puzzle in progressBalise42 · CC BY-SA 4.0 · 来源
10 · 数据类型与数据结构
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Vatican Museum Queue - April 2007Diliff · CC BY-SA 3.0 · 来源
11 · 程序设计
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Java code demonstrating source-code abilitiesIlyaaaaa · CC BY-SA 4.0 · 来源 -
12 · 软件开发
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LampFlowchartsvg by Booyabazookaoriginal png by Wapcaplet · CC BY-SA 3.0 · 来源
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team-meetingStartup Stock Photos · CC0 · 来源
14 · 通信与互联网技术
15 · 硬件与虚拟机
16 · 系统软件
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Intel CPU Core 2 Duo E8400 Wolfdale perspectiveEric Gaba (Sting - fr:Sting) · CC BY-SA 4.0 · 来源
17 · 安全
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YubiKey 5 NFC hardware security keyYubico · Product image · 来源 -
18 · 人工智能(AI)
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Humanoid robotWilly Jackson · CC BY-SA 4.0 · 来源 -
KUKA Industrial Robots IRMixabest · CC BY-SA 3.0 · 来源
19 · 计算思维与问题求解
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54 Nancy bibliothèque municipale - catalogueMarc Baronnet · CC BY-SA 3.0 · 来源
A-Level 经济学
01 · 基本经济概念与资源配置
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University students in a technology learning classroomEllamaria elshmod · CC BY-SA 4.0 · 来源 -
Bingham Canyon Open Pit Copper Mine 2012-09-17 21-25-59Jet6581 · CC BY-SA 3.0 · 来源
02 · 价格体系与微观经济
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Outdoor market fruit and vegetable stall Market Place Romford London 01Acabashi · CC BY-SA 4.0 · 来源 -
Ingo petrol station Fårösund July 01Arild Vågen · CC BY-SA 4.0 · 来源
03 · 政府微观经济干预
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Bonus CigarettesAntonio Kless · CC BY-SA 4.0 · 来源 -
Port Qasim Coal Power Plant, 08.06.2021VileGecko · CC BY-SA 4.0 · 来源 -
04 · 宏观经济
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Central Business District skyline, Singapore, at nightAndrew McMillan · Public domain · 来源 -
Aisle in Daily Market Groceries Canberra City October 2025Nick-D · CC BY-SA 4.0 · 来源
05 · 政府宏观经济干预
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Bank of England Building, London, UK - DiliffDiliff · CC BY-SA 3.0 · 来源 -
Hungarian Parliament Building 1kallerna · CC BY-SA 4.0 · 来源
06 · 国际经济问题
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Red Hook Container Terminal New York September 2016 001King of Hearts · CC BY-SA 4.0 · 来源 -
Red Hook Container Terminal New York September 2016 001King of Hearts · CC BY-SA 4.0 · 来源
07 · 价格体系与微观经济(A Level)
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Large interior view of Plaza Singapura Shopping mall Orchard Road SingaporeBasile Morin · CC BY-SA 4.0 · 来源 -
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Port Qasim Coal Power Plant, 08.06.2021VileGecko · CC BY-SA 4.0 · 来源
08 · 政府微观经济干预(A Level)
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Bonus CigarettesAntonio Kless · CC BY-SA 4.0 · 来源
09 · 宏观经济(A Level)
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Reigate, Lloyds Bank High Street - geograph.org.uk - 4306372Michael Garlick · CC BY-SA 2.0 · 来源 -
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10 · 政府宏观经济干预(A Level)
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Seat of the European Central Bank and Frankfurt Skyline at dawn 20150422 1DXR · CC BY-SA 4.0 · 来源 -
Trading Floor at the New York Stock ExchangeScott Beale · CC BY-SA 4.0 · 来源
11 · 国际经济问题(A Level)
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Aerial image of the Bremerhaven container terminal (view from the southeast)Carsten Steger · CC BY-SA 4.0 · 来源 -
Aerial view of a busy tomato market in Lagos NigeriaAyorinde Ogundele · CC BY-SA 4.0 · 来源
A-Level 高等数学
01 · 进阶纯数学1
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Sailboat with spinnaker 17RM0454Ermell · CC BY-SA 4.0 · 来源 -
Vatican Museums Spiral Staircase 2012Colin · CC BY-SA 3.0 · 来源
02 · 进阶纯数学2
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Romanesco broccoli fractalsJon Sullivan · Public domain · 来源 -
03 · 进阶力学
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James Parker hammer throwTech. Sgt. Mike Hammond · Public domain · 来源 -
Fuente en Baku, Azerbaiyán, 2016-09-26, DD 227-229 HDRDiego Delso · CC BY-SA 4.0 · 来源
04 · 进阶概率与统计
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Galton boxExhibit made by Estes Objethos Atelier, photo by Rodrigo.Argenton · CC BY-SA 4.0 · 来源 -
Dice (typical role playing game dice)Diacritica · CC BY-SA 3.0 · 来源
A-Level 数学
01 · 纯数学1
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London Eye at sunset 2013-07-19Bob Collowan · CC BY-SA 3.0 · 来源 -
Golden Gate Bridge on a clear dayAriel E Barry · CC BY-SA 3.0 · 来源
02 · 纯数学2
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SLNSW 8633 Dense crowd at SCG for test cricketSam Hood · Public domain · 来源
03 · 纯数学3
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Sailboat with spinnaker 17RM0454Ermell · CC BY-SA 4.0 · 来源 -
Romanesco broccoli fractalsJon Sullivan · Public domain · 来源
04 · 力学
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Top Rope ClimbingMatito · CC BY-SA 2.0 · 来源 -
05 · 概率与统计1
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Galton boxExhibit made by Estes Objethos Atelier, photo by Rodrigo.Argenton · CC BY-SA 4.0 · 来源 -
Dice (typical role playing game dice)Diacritica · CC BY-SA 3.0 · 来源
06 · 概率与统计2
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poisson-queue@gadl · CC BY-SA 2.0 · 来源 -
Audience-2595Loadmaster (David R. Tribble) This image was made by Loadmaster (David R. Tribble). Email the author: David R. Tribble Also see my personal gallery at Google Photos · CC BY-SA 3.0 · 来源
A-Level 物理
01 · 物理量与单位
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Mahr Micromar 40A 0–25 mm Micrometer (part labels added)Lucasbosch · CC BY-SA 3.0 · 来源 -
Mahr MarCal 16 N vernier caliperLucasbosch · CC BY-SA 3.0 · 来源 -
MessschieberArtMechanic · CC BY-SA 3.0 · 来源 -
5783metric-micrometerPhotograph taken by Glenn McKechnie · CC BY-SA 2.0 · 来源
02 · 运动学
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Car speedometerChenspec · CC BY-SA 4.0 · 来源 -
Spd Lmt Enforcement Camera in Seohaean Expwy Haemi IC-Seosan IC(Seoul Dir)Jhcbs1019 · CC BY-SA 4.0 · 来源
03 · 动力学
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Space Shuttle Columbia launchingNASA · Public domain · 来源 -
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Group of Skydivers in Freefall Formation at SunsetRstpch · CC BY-SA 4.0 · 来源
04 · 力、密度与压强
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Fischer precision aneroid barometerFischer · Product image · 来源 -
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CBD CranesThabang S. Peter · CC BY-SA 4.0 · 来源
05 · 功、能量与功率
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Wind turbines along North Middle Road, Essex County, Ontario, 2025-06-29Crisco 1492 · CC BY-SA 4.0 · 来源 -
Leviathan ascending (2)Jason Zhang · CC BY-SA 3.0 · 来源 -
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Leichtathletik Gala Linz 2018 pole vault Daubner-6249Isiwal · CC BY-SA 4.0 · 来源
06 · 固体的形变
07 · 波
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Rigol DS1054Z digital oscilloscopeRigol · Product image · 来源 -
Plastic Protractor Polarized 05375Nevit Dilmen · CC BY-SA 3.0 · 来源 -
08 · 叠加
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Soap Bubble - foliage background - iridescent colours - Traquair 040801· CC BY-SA 3.0 · 来源
09 · 电学
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Electronic-Axial-Lead-Resistors-ArrayEvan-Amos · Public domain · 来源 -
Power lines in Stueng Hav DistrictDmitry Makeev · CC BY-SA 4.0 · 来源
10 · 直流电路
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400 points breadboardoomlout · CC BY-SA 2.0 · 来源 -
Multimeter resistor bank (6952361918)Dennis van Zuijlekom from Ermelo, The Netherlands · CC BY-SA 2.0 · 来源
11 · 粒子物理
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Artificial nuclide americium-241 emitting alpha particles inserted into a cloud chamber for visualisationNuledo · CC BY-SA 4.0 · 来源 -
Bubble chamber event. Decay of neutral lambda, anti-lambda hyperons. Photograph circa July 1959. Bubble Chamber-772A - DPLA - 5141859e360581251906c073668c70deDepartment of Energy. Lawrence Berkeley National Laboratory. Public Affairs Department. Strategic Resources Office. Photography Services. 2012 · Public domain · 来源 -
12 · 圆周运动
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Ferris wheel Nice Dec 2008 aCayambe · CC BY-SA 3.0 · 来源 -
Ferris wheel Nice Dec 2008 aCayambe · CC BY-SA 3.0 · 来源
13 · 引力场
14 · 温度
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Mercury ThermometerAnonimski · CC BY-SA 3.0 · 来源
15 · 理想气体
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Scuba diver practising a no mask swimYu Diving · CC BY-SA 2.0 · 来源 -
2008-07-24 Bundle of compressed gas bottlesIldar Sagdejev (Specious) · CC BY-SA 4.0 · 来源
16 · 热力学
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Dampfturbine Laeufer01Siemens Pressebild, http://www.siemens.com · CC BY-SA 3.0 · 来源 -
Rostock Power Station, SW viewRadomianin · CC BY-SA 4.0 · 来源
17 · 振动
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Tacoma Narrows stillBarney Elliot · Public Domain · 来源 -
Shortt Synchronome free pendulum clockUnknown authorUnknown author · Public domain · 来源 -
Close up of an acoustic guitar being playedNataev · CC BY-SA 4.0 · 来源
18 · 电场
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Van de Graaff generator3B Scientific · Product image · 来源 -
19 · 电容
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Capacitors VariousIntiti · Public domain · 来源 -
20 · 磁场
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Bar-magnets-repelling-iron-filings-maxMikeRun, Vera Wurmsdobler · CC BY-SA 4.0 · 来源 -
Iron-filings-around-magnet· CC BY-SA 2.0 · 来源 -
HITACHI, Magnetic Resonance Imaging System, ECHELON OVAL,Mj-bird · CC BY-SA 3.0 · 来源
21 · 交流电
22 · 量子物理
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Ground mounted solar panels.gkGrendelkhan · CC BY-SA 4.0 · 来源
23 · 核物理
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Particle Tracks in AWAN Expansion Cloud ChamberKebuk awan · CC BY-SA 4.0 · 来源
24 · 医学物理
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PET-imageJens Maus (http://jens-maus.de/) · Public domain · 来源 -
25 · 天文学与宇宙学
0101 · 物理量
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Digital vernier caliperJacek Halicki · CC BY-SA 4.0 · 来源
0102 · SI 单位
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Prototype kilogram replicaJaps 88 · CC BY-SA 3.0 · 来源
AP 2-D 艺术与
01 · 艺术元素
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Wright of Derby, The OrreryJoseph Wright of Derby · Public domain · 来源 -
Vincent van Gogh - Sunflowers - VGM F458Vincent van Gogh · Public domain · 来源 -
The Great Wave off KanagawaAfter Katsushika Hokusai · Public domain · 来源 -
JeansfabricThegreenj · CC BY-SA 3.0 · 来源 -
Vincent van Gogh - Self-Portrait - Google Art Project (454045)Vincent van Gogh · Public domain · 来源
02 · 设计原则
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Da Vinci Vitruve Luc ViatourLeonardo da Vinci · Public domain · 来源 -
Textile, Strawberry Thief, designed 1883, printed ca. 1934 (CH 18340065)Unknown artistUnknown artist · Public domain · 来源 -
Vincent van Gogh - Starry Night - Google Art ProjectVincent van Gogh · Public domain · 来源 -
Wright of Derby, The OrreryJoseph Wright of Derby · Public domain · 来源
03 · 二维媒介、材料与技法
04 · 探究:探问与艺术创作过程
05 · 创作:实践、实验与修改
AP 生物
01 · 生命的化学
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Iceberg with hole near Sandersons Hope 2007-07-28 2Kim Hansen · CC BY-SA 3.0 · 来源 -
DNA Double Helix by NHGRINational Human Genome Research Institute · Public domain · 来源 -
1GZX HaemoglobinZephyris at English Wikipedia · CC BY-SA 3.0 · 来源
02 · 细胞结构与功能
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Cloroplasti ElodeaCimice50 · CC BY-SA 4.0 · 来源 -
SEM blood cellsBruce Wetzel (photographer). Harry Schaefer (photographer) · Public domain · 来源 -
03 · 细胞能量学
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Mitochondria, mammalian lung - TEMLouisa Howard · Public domain · 来源 -
Cloroplasti ElodeaCimice50 · CC BY-SA 4.0 · 来源 -
Plastic spoon n Laundry detergent n Washing powder in whiteLebacno · CC BY-SA 3.0 · 来源
04 · 细胞通讯与细胞周期
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Mitosis in Onion Root various stages (Metaphase)Natalierussell77 · CC BY-SA 4.0 · 来源 -
05 · 遗传
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Karyotype (normal)National Cancer Institute · Public domain · 来源 -
Cepaea nemoralis pair banded shells· CC BY-SA 2.0 · 来源
06 · 基因表达与调控
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Thermal cycler for PCRJuan Carlos Fonseca Mata · CC BY-SA 4.0 · 来源 -
DNA ExtractionJoo Nath · CC BY-SA 4.0 · 来源
07 · 自然选择
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Antibiotic sensitivity testDr Graham Beards · CC BY-SA 4.0 · 来源 -
Biston.betularia.f.carbonaria.7209Chiswick Chap · CC BY-SA 3.0 · 来源 -
Berlin ArchaeopteryxEmily Willoughby (emily.a.willoughby@gmail.com) · CC BY-SA 4.0 · 来源 -
Stromatolites in Shark BayHappy Little Nomad · CC BY-SA 2.0 · 来源 -
Tree of life SVGIvica Letunic: Iletunic. Retraced by Mariana Ruiz Villarreal: LadyofHats · Public domain · 来源 -
Active hydrothermal vent- Mushroom (OOI 222)Ocean Observatories Initiative · Public domain · 来源 -
Berlin ArchaeopteryxEmily Willoughby (emily.a.willoughby@gmail.com) · CC BY-SA 4.0 · 来源
08 · 生态学
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Coral Outcrop Flynn ReefToby Hudson · CC BY-SA 3.0 · 来源 -
Deforested area, Goldisthal, 2023-05-20Radomianin · CC BY-SA 4.0 · 来源 -
Ocellaris clownfishMetatron · CC BY-SA 3.0 · 来源 -
A herd of white-tailed deer (Odocoileus virginianus) (5db1cb2b-e72c-4f15-a4d1-662e91c83945)NPS Photo · Public domain · 来源 -
Sunflower against the blue skyTimothy Akolamazima · CC BY-SA 4.0 · 来源
AP 微积分 AB
02 · 微分:定义与基本性质
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Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源
04 · 微分在实际情境中的应用
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Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源 -
Hot air balloon IMGP0344aAlexey V. Kurochkin · CC BY-SA 4.0 · 来源
05 · 微分的分析性应用
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Matterhorn Riffelsee 2005-06-11Dirk Beyer · CC BY-SA 3.0 · 来源 -
New fenced enclosures at garden centre - geograph.org.uk - 6877019Alan Reid · CC BY-SA 2.0 · 来源
06 · 积分与变化的累积
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Water tankMuhammad Saeed · CC BY-SA 3.0 · 来源
07 · 微分方程
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EscherichiaColi NIAIDNIAID · Public domain · 来源 -
08 · 积分的应用
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Potter at workWhippetsgalore · CC BY-SA 4.0 · 来源
AP 微积分 BC
02 · 微分:定义与基本性质
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Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源
03 · 微分:复合、隐式与反函数
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Matterhorn Riffelsee 2005-06-11Dirk Beyer · CC BY-SA 3.0 · 来源
04 · 微分在实际情境中的应用
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Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源 -
Hot air balloon IMGP0344aAlexey V. Kurochkin · CC BY-SA 4.0 · 来源
05 · 微分的分析性应用
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Matterhorn Riffelsee 2005-06-11Dirk Beyer · CC BY-SA 3.0 · 来源 -
New fenced enclosures at garden centreAlan Reid · CC BY-SA 2.0 · 来源
06 · 积分与变化的累积
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Water tankMuhammad Saeed · CC BY-SA 3.0 · 来源
07 · 微分方程
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EscherichiaColi NIAIDNIAID · Public domain · 来源 -
08 · 积分的应用
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Golden Gate Bridge on a clear dayAriel E Barry · CC BY-SA 3.0 · 来源 -
Potter at workWhippetsgalore · CC BY-SA 4.0 · 来源
09 · 参数方程、极坐标与向量值函数
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International Space Station after undocking of STS-132NASA/Crew of STS-132 · Public domain · 来源
10 · 无穷数列与级数
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Russian-Matroshka no bgOriginal photo: User:Fanghong Derivative work: User:Gnomz007 · CC BY-SA 3.0 · 来源
AP 化学
01 · 原子结构与性质
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Coloured flames of methanol solutions of metal salts and compoundsHegelrast · CC BY-SA 4.0 · 来源 -
02 · 化合物的结构与性质
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Halite (rock salt) crystalDidier Descouens · CC BY-SA 4.0 · 来源 -
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03 · 物质与混合物的性质
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Copper sulfate pentahydrate crystalsW. Oelen · CC BY-SA 3.0 · 来源 -
04 · 化学反应
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Magnesium ribbon burningCapt. John Yossarian · CC BY-SA 3.0 · 来源 -
Acid and Base TitrationKengksn · CC BY-SA 4.0 · 来源
05 · 化学动力学
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Gas syringeUser:Geni · CC BY-SA 3.0 · 来源
06 · 热化学
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Daiso instant cold pack 300gphoto: Qurren (talk) Taken with Canon PowerShot G9 X · CC BY-SA 4.0 · 来源 -
07 · 化学平衡
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Cobalt(II) chloride solutionsLeiem · CC BY-SA 4.0 · 来源 -
Yara-Werk bei Tagesanbruch 20115snake5 · CC BY-SA 4.0 · 来源
08 · 酸与碱
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Blue and red litmus paperMeganbeckett27 · CC BY-SA 3.0 · 来源 -
PH Test StripsAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源 -
PH Test StripsAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源
09 · 热力学与电化学
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AA VARTA battery-side PNr°0782D-Kuru · CC BY-SA 4.0 · 来源 -
AA VARTA battery-side PNr°0782D-Kuru · CC BY-SA 4.0 · 来源 -
AA VARTA battery-side PNr°0782D-Kuru · CC BY-SA 4.0 · 来源
AP 计算机科学 A
01 · 使用对象与方法
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Intel CPU Core 2 Duo E8400 Wolfdale perspectiveEric Gaba (Sting - fr:Sting) · CC BY-SA 4.0 · 来源 -
Screen-python-code-matplotlib-physics-simulationMikeRun · CC BY-SA 4.0 · 来源
02 · 选择与迭代
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LampFlowchartsvg by Booyabazookaoriginal png by Wapcaplet · CC BY-SA 3.0 · 来源
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UK Red Traffic Light With Green Filter Arrow - geograph.org.uk - 6409628Gary · CC BY-SA 2.0 · 来源 -
03 · 类的创建
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Jigsaw puzzle in progressBalise42 · CC BY-SA 4.0 · 来源 -
Blueprint - Hallwylska museet - 101011Unknown authorUnknown author · Public domain · 来源
04 · 数据集合
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Hand in filing cabinetWatty62 · CC BY-SA 4.0 · 来源 -
AP 计算机科学原理
01 · 创造性开发
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Jigsaw puzzle in progressBalise42 · CC BY-SA 4.0 · 来源
02 · 数据
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Binary-codeGraph+sas · CC BY-SA 4.0 · 来源 -
Hard disk platters and headMfield, Matthew Field, http://www.photography.mattfield.com · CC BY-SA 3.0 · 来源
03 · 算法与编程
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Screen-python-code-matplotlib-physics-simulationMikeRun · CC BY-SA 4.0 · 来源
04 · 计算机系统与网络
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Ethernet RJ45 connector p1160054No machine-readable author provided. David.Monniaux assumed (based on copyright claims) · CC BY-SA 3.0 · 来源 -
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Netgear-Nighthawk-AC1900-WiFi-RouterEvan-Amos · Public domain · 来源
05 · 计算的影响
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CCTV control room monitor wallMark Yeomans · CC BY-SA 4.0 · 来源 -
Ewaste-pileAvWijk · Public domain · 来源 -
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Computer stations at Uganda Development Services Public Library, Kamuli districtAKibombo · CC BY-SA 4.0 · 来源 -
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Gender Gap Wikipedia Edit-a-thon (6)Liridon · CC BY-SA 4.0 · 来源
AP 网络安全
01 · 安全导论
02 · 保护物理空间
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CCTV control room monitor wallMark Yeomans · CC BY-SA 4.0 · 来源 -
Vandal dome-style security camera next to signage on exterior of Target storeMyotus · CC BY-SA 4.0 · 来源 -
Padlock 7642ImagePerson · CC BY-SA 4.0 · 来源
03 · 保护网络
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Ethernet switch 2Deavmi · CC BY-SA 3.0 · 来源 -
04 · 保护设备
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-
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Biometric Fingerprint ScannerSanskritibharti1398 · CC BY-SA 4.0 · 来源
05 · 保护应用与数据
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Enigma-IMG 0487-blackRama · CC BY-SA 2.0 fr · 来源 -
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Padlock 7642ImagePerson · CC BY-SA 4.0 · 来源
AP 绘画
01 · 线条与笔触
02 · 明度、光影与形体
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Seurat Paul SignacGeorges Seurat · Public domain · 来源
03 · 空间、纵深与比例
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Amboy (California, USA), Hist. Route 66 -- 2012 -- 1Dietmar Rabich · CC BY-SA 4.0 · 来源 -
Smoky Mountain Vista from Andrews BaldScott Basford · CC BY-SA 3.0 · 来源
04 · 绘画媒介与创作过程
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Jean-Auguste-Dominique Ingres - Portrait of Guillaume Guillon-Lethière - Google Art ProjectJean-Auguste-Dominique Ingres · Public domain · 来源 -
Tobias asleep, Rembrandt van Rijn, c. 1651, pen and brown ink, corrected with white gouache, 16.9 by 19.0 cm, Museum Boijmans Van Beuningen, RotterdamRembrandt · Public domain · 来源 -
Edgar Degas - Ballet (L'Étoile)Edgar Degas · Public domain · 来源 -
Rembrandt The Three Crosses 1653Rembrandt · Public domain · 来源
05 · 探究:探问与艺术创作过程
06 · 创作:实践、实验与修改
07 · 呈现:沟通与AP绘画作品集
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Portrait of Alphonse Gérard, Comte de Rayneval (by Jean Auguste Dominique Ingres)Jean-Auguste-Dominique Ingres · Public domain · 来源 -
Artist studioStudiotarekatoui · CC BY-SA 4.0 · 来源 -
Albrecht Dürer - Praying Hands, 1508 - Google Art ProjectAlbrecht Dürer · Public domain · 来源 -
AP 英语文学与写作
02 · 诗歌 一
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Page of text with commentary and pointers in margins (NYPL b12455533-423678)Scan by NYPL · Public domain · 来源
AP 环境科学
01 · 生物世界:生态系统
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Moore Reef underwater ReefScapeHolobionics · CC BY-SA 4.0 · 来源 -
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Sossusvlei sand dunesWinfried Bruenken (Amrum) · CC BY-SA 2.5 · 来源
02 · 生物世界:生物多样性
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Rock covered with multicolored patches of lichenTomascastelazo · CC BY-SA 4.0 · 来源 -
Moore Reef underwater ReefScapeHolobionics · CC BY-SA 4.0 · 来源
03 · 种群
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-
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A herd of white-tailed deer (Odocoileus virginianus) (5db1cb2b-e72c-4f15-a4d1-662e91c83945)NPS Photo · Public domain · 来源 -
04 · 地球系统与资源
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001 Volcano eruption of Litli-Hrútur in Iceland in 2023 Photo by Giles LaurentGiles Laurent · CC BY-SA 4.0 · 来源 -
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Sossusvlei sand dunesWinfried Bruenken (Amrum) · CC BY-SA 2.5 · 来源 -
00 1838 Iguazu Falls from the Brazilian sideW. Bulach · CC BY-SA 4.0 · 来源
05 · 土地与水资源利用
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Longsheng Rice Terraces November 2017 014King of Hearts · CC BY-SA 4.0 · 来源 -
2019 Bingham Canyon Mine 04Farragutful · CC BY-SA 4.0 · 来源 -
WITHIN A MILE OF MAGNIFICENT REDWOODS ARE SITES OF SOME OF THE WORST LOGGING AND CLEAR CUTTING - NARA - 542855Tomas Sennett · Public domain · 来源 -
Aerial view of suburban housing in Blacklick, Ohio, October 2024Pi.1415926535 · CC BY-SA 4.0 · 来源 -
SPRAYING PESTICIDES - NARA - 544246 (cropped)John Messina · Public domain · 来源 -
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Farmland near Bradeley Green in Cheshire - geograph.org.uk - 5271496Roger Kidd · CC BY-SA 2.0 · 来源
06 · 能源资源与消耗
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TurowCoalMinePetr Vodička · CC BY-SA 4.0 · 来源 -
Olkiluoto 1&2kallerna · Public domain · 来源 -
Krafla power plant - KröflustöðVilly Fink Isaksen · CC BY-SA 4.0 · 来源 -
Dülmen, Kirchspiel, Welte, Windräder -- 2010 -- 3519Dietmar Rabich · CC BY-SA 4.0 · 来源 -
Paneles solares en Cariñena, España, 2015-01-08, DD 08Diego Delso · CC BY-SA 4.0 · 来源 -
Glen Canyon Dam 2013Tuxyso · CC BY-SA 3.0 · 来源 -
Paneles solares en Cariñena, España, 2015-01-08, DD 08Diego Delso · CC BY-SA 4.0 · 来源 -
Dülmen, Kirchspiel, Welte, Windräder -- 2010 -- 3519Dietmar Rabich · CC BY-SA 4.0 · 来源
07 · 大气污染
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Salt Lake City smog haze skyline 01Eltiempo10 · CC BY-SA 4.0 · 来源 -
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08 · 水生与陆地污染
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Detail of mangrove rootsJonathan Wilkins · CC BY-SA 3.0 · 来源 -
Pond covered in algaeMijesty · CC BY-SA 4.0 · 来源 -
Knott Landfill - Deschutes County, OregonTequask · CC BY-SA 4.0 · 来源
09 · 全球变化
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Largest ever Ozone hole sept2000NASA · Public domain · 来源 -
Bleached colony of Acropora coralVardhanjp · CC BY-SA 4.0 · 来源 -
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Kudzu on trees in Atlanta, GeorgiaScott Ehardt · Public domain · 来源 -
A coral reef on the Great Barrier ReefToby Hudson · CC BY-SA 3.0 · 来源 -
TurowCoalMinePetr Vodička · CC BY-SA 4.0 · 来源
AP 欧洲历史
01 · 文艺复兴与探索时代
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Musée de l'imprimerie de Nantes - 075 - Presse à bras en bois, commandé par GutenbergKoreller · CC BY-SA 4.0 · 来源 -
03 · 专制主义与宪政主义
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Chateau Versailles Galerie des GlacesMyrabella · CC BY-SA 3.0 · 来源
06 · 工业化及其影响,约1815年至约1914年
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Crystal Palace - interiorJ. McNeven · Public domain · 来源
08 · 20世纪的全球冲突,约1914年至今
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Cheshire Regiment trench Somme 1916John Warwick Brooke · Public domain · 来源
AP 人文地理
01 · 地理思维
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Aerial view of suburban housing in Blacklick, Ohio, October 2024Pi.1415926535 · CC BY-SA 4.0 · 来源
02 · 人口与迁移的格局与过程
03 · 文化的格局与过程
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Seattle - Chinatown gate 01Joe Mabel · CC BY-SA 3.0 · 来源 -
SF Chinatown street sign ClayDaniel Schwen · CC BY-SA 4.0 · 来源 -
SF Chinatown street sign ClayDaniel Schwen · CC BY-SA 4.0 · 来源
04 · 政治的格局与过程
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Hungarian Parliament Building 1kallerna · CC BY-SA 4.0 · 来源 -
WITHIN A MILE OF MAGNIFICENT REDWOODS ARE SITES OF SOME OF THE WORST LOGGING AND CLEAR CUTTING - NARA - 542855Tomas Sennett · Public domain · 来源 -
Hong Kong skylinevictorgrigas · CC BY-SA 3.0 · 来源 -
UN General Assembly hallPatrick Gruban, cropped and downsampled by Pine · CC BY-SA 2.0 · 来源 -
US-Mexico border fenceOffice of Representative Phil Gingrey · Public domain · 来源
05 · 农业与乡村土地利用的格局与过程
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Combine harvester cutting wheat at Arbuthnott, Aberdeenshire - geograph.org.uk - 8117522Adrian Diack · CC BY-SA 2.0 · 来源 -
Farmer using a hoe in a farmAdesolive · CC BY-SA 4.0 · 来源 -
Rows in a tea plantationAdesolive · CC BY-SA 4.0 · 来源 -
Combine harvester cutting wheat at Arbuthnott, Aberdeenshire - geograph.org.uk - 8117522Adrian Diack · CC BY-SA 2.0 · 来源
06 · 城市与城市土地利用的格局与过程
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Tokyo Shibuya Scramble Crossing 2018-10-09Benh LIEU SONG (Flickr) · CC BY-SA 2.0 · 来源
07 · 工业与经济发展的格局与过程
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Container ship NYK Themis at the Port of Los AngelesDowntowngal · CC BY-SA 4.0 · 来源 -
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Paneles solares en Cariñena, España, 2015-01-08, DD 08Diego Delso · CC BY-SA 4.0 · 来源 -
Container ship NYK Themis at the Port of Los AngelesDowntowngal · CC BY-SA 4.0 · 来源
AP 宏观经济学
01 · 基本经济概念
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Bingham Canyon Open Pit Copper Mine 2012-09-17 21-25-59Jet6581 · CC BY-SA 3.0 · 来源 -
DFC 2094 Evening buzz at a busy night market - food stalls colorful lights and people strolling through the crowded aislePattayaPatrol · CC BY-SA 4.0 · 来源 -
Aerial image of the Bremerhaven container terminal (view from the southeast)Carsten Steger · CC BY-SA 4.0 · 来源
02 · 经济指标与经济周期
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Vatican Museum Queue - April 2007Diliff · CC BY-SA 3.0 · 来源 -
Aisle in Daily Market Groceries Canberra City October 2025Nick-D · CC BY-SA 4.0 · 来源
03 · 国民收入与价格决定
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Port Qasim Coal Power Plant, 08.06.2021VileGecko · CC BY-SA 4.0 · 来源 -
Central Business District skyline, Singapore, at nightAndrew McMillan · Public domain · 来源
04 · 金融部门
-
Euro Series Banknotes (2019)PawełMM · CC BY-SA 3.0 · 来源 -
Trading floor of the New York Stock Exchange, New York City LCCN2011632435Carol M. Highsmith · Public domain · 来源 -
Bank of England Building, London, UK - DiliffDiliff · CC BY-SA 3.0 · 来源
05 · 稳定政策的长期影响
-
Hungarian Parliament Building 1kallerna · CC BY-SA 4.0 · 来源 -
-
Euro Series Banknotes (2019)PawełMM · CC BY-SA 3.0 · 来源 -
Trading floor of the New York Stock Exchange, New York City LCCN2011632435Carol M. Highsmith · Public domain · 来源
06 · 开放经济——国际贸易与金融
-
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Aerial image of the Bremerhaven container terminal (view from the southeast)Carsten Steger · CC BY-SA 4.0 · 来源
AP 微观经济学
01 · 基本经济概念
-
Outdoor market fruit and vegetable stall Market Place Romford London 01Acabashi · CC BY-SA 4.0 · 来源 -
Aerial image of the Bremerhaven container terminal (view from the southeast)Carsten Steger · CC BY-SA 4.0 · 来源
02 · 供给与需求
-
Fruit and vegetable stall at Southside Farmers Market November 2025Nick-D · CC BY-SA 4.0 · 来源 -
DFC 2094 Evening buzz at a busy night market - food stalls colorful lights and people strolling through the crowded aislePattayaPatrol · CC BY-SA 4.0 · 来源
03 · 生产、成本与完全竞争模型
04 · 不完全竞争
-
-
Port Qasim Coal Power Plant, 08.06.2021VileGecko · CC BY-SA 4.0 · 来源
05 · 要素市场
06 · 市场失灵与政府的作用
-
Bonus CigarettesAntonio Kless · CC BY-SA 4.0 · 来源 -
-
Port Qasim Coal Power Plant, 08.06.2021VileGecko · CC BY-SA 4.0 · 来源 -
Bielsko-Biała, ulica Warszawska, korek 02Kamil Czaiński · CC BY-SA 4.0 · 来源
AP 物理 1
01 · 运动学
-
SNCF TGV Duplex Viaduc de Cize - BolozonKabelleger / David Gubler (http://www.bahnbilder.ch) · CC BY-SA 3.0 · 来源 -
Car speedometerChenspec · CC BY-SA 4.0 · 来源
02 · 力与平动动力学
-
Space Shuttle Columbia launchingNASA · Public domain · 来源 -
Group of Skydivers in Freefall Formation at SunsetRstpch · CC BY-SA 4.0 · 来源
03 · 功、能与功率
-
-
00 1838 Iguazu Falls from the Brazilian sideW. Bulach · CC BY-SA 4.0 · 来源
04 · 线动量
-
Newton's CradleAntHolnes · CC BY-SA 3.0 · 来源
05 · 力矩与转动动力学
-
SpringHandExerciserSimon Speed · Public domain · 来源 -
06 · 转动系统的能量与动量
-
ISS Aug2005NASA · Public domain · 来源
07 · 振动
-
-
SpringHandExerciserSimon Speed · Public domain · 来源
08 · 流体
-
-
Hydraulic jacks 8655SwarmCheng · CC BY-SA 4.0 · 来源
AP 物理 2
09 · 热力学
-
Hot air balloon IMGP0344aAlexey V. Kurochkin · CC BY-SA 4.0 · 来源 -
10 · 电力、电场与电势
-
-
Muller Van de Graaff generator demonstrationDrbaker171 at English Wikipedia · Public domain · 来源
11 · 电路
-
ESP-01 WiFi Breadboard ProjectRetroEditor · CC BY-SA 4.0 · 来源 -
Rigol DS1054Z digital oscilloscopeRigol · Product image · 来源 -
Power lines in Stueng Hav DistrictDmitry Makeev · CC BY-SA 4.0 · 来源
12 · 磁学与电磁学
-
Bar-magnet-iron-filings maxMikeRun, Vera Wurmsdobler · CC BY-SA 4.0 · 来源 -
Aurora borealis over Eielson Air Force Base, AlaskaUnited States Air Force photo by Senior Airman Joshua Strang · Public domain · 来源 -
-
13 · 几何光学
-
Convex lens (magnifying glass) and upside-down imageAntanO · CC BY-SA 4.0 · 来源 -
DispersionPrismeKilohn limahn · CC BY-SA 4.0 · 来源
14 · 波、声音与物理光学
AP 物理 C:电磁学
08 · 电荷、电场与高斯定律
-
OneTeslaTS DRSSTC Tesla Coil closeupOriginal image: OneTesla Derived image: Chetvorno · CC BY-SA 4.0 · 来源 -
Muller Van de Graaff generator demonstrationDrbaker171 at English Wikipedia · Public domain · 来源
09 · 电势
-
Power lines in Stueng Hav DistrictDmitry Makeev · CC BY-SA 4.0 · 来源
10 · 导体与电容器
-
Capacitors VariousIntiti · Public domain · 来源 -
11 · 电路
-
ESP-01 WiFi Breadboard ProjectRetroEditor · CC BY-SA 4.0 · 来源 -
Rigol DS1054Z digital oscilloscopeRigol · Product image · 来源
12 · 磁场与电磁学
-
-
Aurora borealis over Eielson Air Force Base, AlaskaUnited States Air Force photo by Senior Airman Joshua Strang · Public domain · 来源
13 · 电磁感应
-
Electric Motor RotorRichard Wheeler (Zephyris) · CC BY-SA 3.0 · 来源 -
AP 物理 C:力学
01 · 运动学
-
SNCF TGV Duplex Viaduc de Cize - BolozonKabelleger / David Gubler (http://www.bahnbilder.ch) · CC BY-SA 3.0 · 来源 -
Car speedometerChenspec · CC BY-SA 4.0 · 来源
02 · 力与平动动力学
-
Space Shuttle Columbia launchingNASA · Public domain · 来源 -
Group of Skydivers in Freefall Formation at SunsetRstpch · CC BY-SA 4.0 · 来源
04 · 线动量
-
Newton's CradleAntHolnes · CC BY-SA 3.0 · 来源
05 · 力矩与转动动力学
-
-
Analytical beam balance - Upper part of high precision mechanical analytical scalesSergei Golyshev · CC BY-SA 2.0 · 来源
06 · 转动系统的能量与动量
-
Kimmy Repond (born 18 October 2006), Swiss figure skater, at Art on Ice 2026 in Zurich. DSC05240Skyscraper2010 · CC BY-SA 4.0 · 来源
07 · 振动
-
Saint Isaac's Cathedral - Foucault pendulum in 1984This photo is a scanned Reversal film (Slide) · CC BY-SA 4.0 · 来源
AP 预备微积分
01 · 多项式函数与有理函数
-
Golden Gate Bridge on a clear dayAriel E Barry · CC BY-SA 3.0 · 来源 -
-
Antena parabólicaRjcastillo · CC BY-SA 3.0 · 来源
02 · 指数函数与对数函数
-
-
-
EscherichiaColi NIAIDNIAID · Public domain · 来源
03 · 三角函数与极坐标函数
-
Giant Ferris Wheel Vienna from W on 2010-09-20Robert F. Tobler · CC BY-SA 4.0 · 来源 -
International Space Station after undocking of STS-132NASA/Crew of STS-132 · Public domain · 来源
04 · 涉及参数、向量与矩阵的函数
-
Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源 -
AP 心理学
01 · 行为的生物学基础
-
-
Wired up for a sleep study 02AJoe Mabel · CC BY-SA 3.0 · 来源
AP 统计学
03 · 收集数据
-
Clinical trialFatemi.ebr · CC BY-SA 4.0 · 来源 -
Dice (typical role playing game dice)Stephantom · CC BY-SA 3.0 · 来源 -
Amboy (California, USA), Hist. Route 66 -- 2012 -- 1Dietmar Rabich · CC BY-SA 4.0 · 来源
04 · 概率、随机变量与概率分布
-
Ace playing cardsEnoch Lau · CC BY-SA 3.0 · 来源
07 · 定量数据的推断:均值
-
Dice (typical role playing game dice)Stephantom · CC BY-SA 3.0 · 来源
AP 美国历史
01 · 第一时期:1491—1607
-
-
Cliff Palace-Colorado-Mesa Verde NPTobi 87 · CC BY-SA 4.0 · 来源
06 · 第六时期:1865—1898
-
Bessemer converter BlowingBorvan53 · Public domain · 来源
07 · 第七时期:1890—1945
-
Assembly line Ford T, 1923Peter Elfelt · CC BY-SA 4.0 · 来源 -
Dust bowl, Texas Panhandle, TX fsa.8b27276 editArthur Rothstein · Public domain · 来源
09 · 第九时期:1980年至今
-
Container Terminal Tollerort, Vorhafen, Hamburg (P1080405)Matti Blume · CC BY-SA 4.0 · 来源
AP 世界历史:现代
01 · 全球织锦
-
Great-Zimbabwe-ruins-outer-walls-3-1200Edwin Smith and Andrew Dale · CC BY-SA 4.0 · 来源
02 · 交流网络
-
Inhambane-dhow—Steven G. Johnson · CC BY-SA 3.0 · 来源
03 · 陆基帝国
-
Mezquita de Solimán, Estambul, Turquía, 2024-09-28, DD 147-149 HDRDiego Delso · CC BY-SA 4.0 · 来源 -
Taj Mahal, Agra, India edit2Yann; edited by King of Hearts · CC BY-SA 4.0 · 来源
04 · 跨洋联系
-
Cerro Rico, Potosí, BoliviaJbmurray · CC BY-SA 4.0 · 来源 -
Barcelona - Replica of Santa Maria CaravelUnknown author · Public domain · 来源
IGCSE 生物
01 · 生物的特征与分类
-
-
Fly agaric mushroomOnderwijsgek · CC BY-SA 3.0 nl · 来源 -
Entomologie HamburgHanse hiwi · CC BY-SA 4.0 · 来源
02 · 生物体的组成
-
-
Compound light microscopeGcG(jawp) · Public domain · 来源
03 · 物质进出细胞
04 · 生物分子
-
-
Fresh made bread 05FranHogan · CC BY-SA 4.0 · 来源 -
05 · 酶
-
Detergent - Persil Megaperls 02Kritzolina · CC BY-SA 4.0 · 来源 -
Kiwi (Actinidia chinensis) 1 Luc ViatourLuc Viatour · CC BY-SA 2.5 · 来源
06 · 植物的营养
-
Stomata in a leaf (light micrograph, 400x)ChrisInMilton · CC BY-SA 4.0 · 来源 -
Sunlight on a green leaf (India, 2016)Aurr123 · CC BY-SA 4.0 · 来源 -
Chloroplasts in moss leaf cells (light micrograph)Kristian Peters -- Fabelfroh · CC BY-SA 3.0 · 来源
07 · 人体的营养
-
Types of teethhttp://www.scientificanimations.com/ · CC BY-SA 4.0 · 来源 -
Fresh Vegetables display in Iloilo Terminal Public Market 06OnlyJanz · CC BY-SA 4.0 · 来源
08 · 植物体内的运输
-
Dicot stem cross-section (light micrograph)User:Micropix · CC BY-SA 3.0 · 来源 -
Tall oak by MyrstigenW.carter · CC BY-SA 4.0 · 来源
09 · 动物体内的运输
-
Blood cells (scanning electron micrograph)Bruce Wetzel and Harry Schaefer (National Cancer Institute) · Public domain · 来源 -
10 · 疾病与免疫
-
White blood cell engulfing bacteriaNational Institutes of Health (NIH) · Public domain · 来源 -
Mosquito (Ochlerotatus annulipes) and Midge (Culicoides impunctatus) biting human (me)Dunpharlain · CC BY-SA 4.0 · 来源
11 · 人体的气体交换
-
-
Respiratory system complete (en)LadyofHats, Jmarchn · Public domain · 来源
12 · 呼吸作用
-
Finish of sprint running, 1992 ParalympicsNorman Bailey/Australian Paralympic Committee · CC BY-SA 3.0 · 来源 -
Berlin-Marathon 2015 Runners 14Denis Barthel · CC BY-SA 4.0 · 来源
13 · 人体的排泄
-
Haemodialysis machineВиталий Поспелов at ru.wikipedia · CC BY-SA 3.0 · 来源 -
Kidney section verticalHenry Vandyke Carter · Public domain · 来源
14 · 协调与反应
15 · 药物
-
Antibiotic sensitivity testDr Graham Beards · CC BY-SA 4.0 · 来源 -
Bonus CigarettesAntonio Kless · CC BY-SA 4.0 · 来源
16 · 生殖
-
-
Lily flower: stamens and stigmaSubhrajyoti07 · CC BY-SA 4.0 · 来源 -
17 · 遗传
18 · 变异与选择
-
Peppered moth: dark (melanic) formChiswick Chap · CC BY-SA 3.0 · 来源 -
-
-
20180124-OSEC-PJK-1132 TONED (39891696481)U.S. Department of Agriculture Preston Keres/Office of Communications-Photography Services Center · Public domain · 来源
19 · 生物与环境
-
Coral reef ecosystemJim E Maragos, U.S. Fish and Wildlife Service · Public domain · 来源 -
African savanna elephants at Saadani National Park TanzaniaRasheedhrasheed · CC BY-SA 4.0 · 来源
20 · 人类对生态系统的影响
-
-
Deforested area, Goldisthal, 2023-05-20Radomianin · CC BY-SA 4.0 · 来源 -
21 · 生物技术与基因改造
-
-
Gel electrophoresis 2Mnolf · CC BY-SA 3.0 · 来源
IGCSE 商业研究
01 · 理解商业活动
-
Retail outlets, High Street - geograph.org.uk - 7644448John Baker · CC BY-SA 2.0 · 来源 -
Bonn, Post-Tower -- 2017 -- 2128 (bw)Dietmar Rabich · CC BY-SA 4.0 · 来源
02 · 企业中的人
03 · 市场营销
-
A John Lewis Partnership shop window (8734849424)Tyne & Wear Archives & Museums · No restrictions · 来源 -
04 · 运营管理
-
-
Daiwa Logistics Tosu Logistics CenterPeka · CC BY-SA 4.0 · 来源 -
BMW Leipzig MEDIA 050719 Download Karosseriebau maxBMW Werk Leipzig · CC BY-SA 2.0 de · 来源
05 · 财务信息与决策
-
-
-
Trading floor of the New York Stock Exchange, New York City LCCN2011632435Carol M. Highsmith · Public domain · 来源
06 · 影响商业活动的外部因素
-
Shipping containers at West Harbour in Jätkäsaari, Helsinki, Finland, 2008 OctoberKari Hakli · CC BY-SA 4.0 · 来源 -
Brayton Point Cooling TowersWikimaster97commons · CC BY-SA 3.0 · 来源 -
Hungarian Parliament Building 1kallerna · CC BY-SA 4.0 · 来源
IGCSE 化学
01 · 物质的状态
-
-
Ice cubes openphotoDarren Hester · CC BY-SA 2.5 · 来源 -
DryIceSublimationSarathtly · Public domain · 来源
02 · 原子、元素与化合物
-
-
Water-3D-balls-ABen Mills · Public domain · 来源 -
Halit (NaCl) - Kopalnia soli Wieliczka, PolskaLech Darski · CC BY-SA 4.0 · 来源 -
Graphite found near MauternKritzolina · CC BY-SA 4.0 · 来源
03 · 化学计量
-
Acid and Base TitrationKengksn · CC BY-SA 4.0 · 来源 -
Analytical balance mettler ae-260US DEA · Public domain · 来源
04 · 电化学
-
-
Hofmann'scher Wasserzersetzungsapparat - Deutsches Museum VerkehrszentrumMattes · CC BY-SA 3.0 · 来源
05 · 化学能量学
-
Campfires burning wood pitsJon Sullivan · Public domain · 来源 -
Bunsen burner flame typesArthur Jan Fijałkowski · CC BY-SA 3.0 · 来源 -
Bunsen burner flame typesArthur Jan Fijałkowski · CC BY-SA 3.0 · 来源
06 · 化学反应
-
Rust on ironLaitr Keiows · CC BY-SA 3.0 · 来源 -
Potassium permanganate solutions 2Leiem · CC BY-SA 4.0 · 来源
07 · 酸、碱与盐
-
-
Blue and red litmus paperMeganbeckett27 · CC BY-SA 3.0 · 来源 -
PH Test StripsAjay Kumar Chaurasiya · CC BY-SA 4.0 · 来源 -
Limestone Cliffs, Little Ormes Head - geograph.org.uk - 7808316N Chadwick · CC BY-SA 2.0 · 来源
08 · 元素周期表
-
Potassium reacting with waterTavoromann · CC BY-SA 3.0 · 来源 -
-
Coloured-transition-metal-solutionsNo machine-readable author provided. Benjah-bmm27 assumed (based on copyright claims) · Public domain · 来源 -
Edelgase in EntladungsroehrenAlchemist-hp www.pse-mendelejew.de · CC BY-SA 2.0 de · 来源
09 · 金属
-
Rusted iron chainMX1996 · CC BY-SA 4.0 · 来源 -
Cathay Pacific A350-941 preparing to takeoff on runway 25L@HKGBenYung0531 · CC BY-SA 4.0 · 来源 -
-
10 · 环境化学
11 · 有机化学
IGCSE 计算机科学
01 · 数据表示
-
Die (the 'heart') of a microprocessor Intel 80486 with 1.2 millions of transistors, ca. 1990Thomy pc at German Wikipedia · Public domain · 来源 -
Binary-codeGraph+sas · CC BY-SA 4.0 · 来源 -
Hard disk platters and headMfield, Matthew Field, http://www.photography.mattfield.com · CC BY-SA 3.0 · 来源
02 · 数据传输
-
USB connectorsTechtonic · Public domain · 来源 -
An Ethernet cableNo machine-readable author provided. David.Monniaux assumed (based on copyright claims) · CC BY-SA 3.0 · 来源 -
Fiber optic illuminatedHustvedt · CC BY-SA 3.0 · 来源
03 · 硬件
-
Inside a hard disk driveZzubnik · Public domain · 来源 -
-
An optical disc· Public domain · 来源 -
A USB flash driveDmitry Makeev · CC BY-SA 4.0 · 来源 -
A magnetic tape cartridgeMister rf · CC BY-SA 4.0 · 来源 -
Logitech K120 USB keyboardLogitech · Product image · 来源 -
Logitech M100 optical mouseLogitech · Product image · 来源 -
Honeywell Voyager 1250g barcode scannerHoneywell · Product image · 来源 -
Epson Perfection V39 II flatbed scannerEpson · Product image · 来源 -
Brother HL-L2400D laser printerBrother · Product image · 来源 -
Bambu Lab X1 Carbon with AMS module (cropped)Benlisquare · CC BY-SA 4.0 · 来源 -
Canon PIXMA TS3520 inkjet printerCanon · Product image · 来源 -
Logitech Z313 computer speakersLogitech · Product image · 来源 -
Samsung 24-inch monitorSamsung · Product image · 来源 -
Logitech Yeti USB microphoneLogitech · Product image · 来源 -
Logitech H390 headsetLogitech · Product image · 来源 -
Samsung Galaxy Tab A9 tabletSamsung · Product image · 来源 -
Corsair Vengeance DDR5 RAM moduleCorsair · Product image · 来源 -
Intel CPU Core i7 6700K Skylake topEric Gaba (Sting - fr:Sting) · CC BY-SA 4.0 · 来源 -
Electronic-Component-Screw-DC-MotorEvan-Amos · Public domain · 来源 -
AM2302 (DHT22) digital temperature and humidity sensor moduleSuyash Dwivedi · CC BY-SA 4.0 · 来源 -
Navigon Canada 310 - board-40222Raimond Spekking · CC BY-SA 4.0 · 来源 -
Nikon D850 digital single-lens reflex cameraG1MFG · CC BY-SA 4.0 · 来源 -
-
Netgear-Nighthawk-AC1900-WiFi-RouterEvan-Amos · Public domain · 来源
04 · 软件
-
-
-
Screen-python-code-matplotlib-physics-simulationMikeRun · CC BY-SA 4.0 · 来源
05 · 互联网及其应用
-
A home Wi-Fi routerEvan-Amos · Public domain · 来源 -
A data centreBalticServers.com · CC BY-SA 3.0 · 来源 -
Padlock 7642ImagePerson · CC BY-SA 4.0 · 来源
06 · 自动化与新兴技术
-
An industrial robot armНечаева Лилия Александровна · CC BY-SA 4.0 · 来源 -
-
Mi Robot VacuumPopey900 · Copyrighted free use · 来源 -
07 · 算法设计与问题求解
-
programmerhackNY · CC BY-SA 2.0 · 来源
08 · 程序设计
-
Screen-python-code-matplotlib-physics-simulationMikeRun · CC BY-SA 4.0 · 来源 -
09 · 数据库
-
SchlagwortkatalogDr. Marcus Gossler · CC BY-SA 3.0 · 来源 -
10 · 布尔逻辑
-
A logic gate chipS. Kaba · Public domain · 来源 -
ESP-01 WiFi Breadboard ProjectRetroEditor · CC BY-SA 4.0 · 来源
IGCSE 经济学
01 · 基本经济问题
-
DFC 2094 Evening buzz at a busy night market - food stalls colorful lights and people strolling through the crowded aislePattayaPatrol · CC BY-SA 4.0 · 来源 -
Farmland near Bradeley Green in Cheshire - geograph.org.uk - 5271496Roger Kidd · CC BY-SA 2.0 · 来源
02 · 资源的配置
-
Factory smoke in sunset - geograph.org.uk - 1769920Nic Franklin-Woolley · CC BY-SA 2.0 · 来源 -
03 · 微观经济决策者
-
SPAR kolonial mat varehandel hyller (Supermarket interior GROCERY store aisle shelves) Frokostblandinger gryn müsli Axa frukt energi 4-korn blåbær (cereals muesli) etc Tjøme NORWAY 2023-08-31 IMG 1095Wolfmann · CC BY-SA 4.0 · 来源 -
-
04 · 政府与宏观经济
-
People's Bank of China (2006-02-18)Yongxinge (Wikimedia Commons) · CC BY-SA 3.0 · 来源 -
-
Vatican Museum Queue - April 2007Diliff · CC BY-SA 3.0 · 来源
05 · 经济发展
-
-
1 singapore city skyline dusk panorama 2011chenisyuan · CC BY-SA 4.0 · 来源
06 · 国际贸易与全球化
-
Container portH. Zell · CC BY-SA 3.0 · 来源 -
Port bow view of the Russian merchant container ship CHITA underway. The ship has numerous commercial vehicles as deck cargo - DPLA - e120d3e0e4cf053032385cc8b2eca1feDepartment of Defense. American Forces Information Service. Defense Visual Information Center. 1994 · Public domain · 来源
IGCSE 英语
01 · 阅读技能
-
Departure board at Geneva AirportTiia Monto · CC BY-SA 3.0 · 来源 -
03 · 写非正式电子邮件
-
-
Berkawan dalam kesukaanYaradina · CC BY-SA 4.0 · 来源
04 · 写正式信函或电子邮件
05 · 写报告
-
Carlisle Indian School, Carlisle, Pa. Classroom debate by debating society LCCN2008675522Johnston, Frances Benjamin, 1864-1952, photographer · Public domain · 来源 -
06 · 写文章
-
Front Page of 2025 Atmore AdvanceJMMediaGroup1 · CC BY-SA 4.0 · 来源 -
Newspapers on a newsstandMaksym Kozlenko · CC BY-SA 4.0 · 来源
07 · 写评论
08 · 写议论文
-
Rammohun Library and Free Reading Room - Rare Books Collection (1)Sumitsurai · CC BY-SA 4.0 · 来源 -
09 · 听力技能
-
Radio WWOZ New Orleans studio October 2009 01Infrogmation of New Orleans · CC BY-SA 4.0 · 来源 -
10 · 口语技能
-
Don Young speaking at Juneau-Douglas High School, 1972-1973 school yearJuneau-Douglas High School (or student class/group of the school), Juneau, Alaska · Public domain · 来源 -
11 · 词汇与文本类型
-
Compact Oxford English Dictionary 2Cullen328 · CC BY-SA 4.0 · 来源
IGCSE 数学
01 · 数
02 · 代数与图像
-
Romanesco broccoli fractalsJon Sullivan · Public domain · 来源 -
03 · 坐标几何
-
Sustenpass, Kanton UriPhilipp Ramseier · CC BY-SA 4.0 · 来源 -
04 · 几何
-
Symmetry of the Taj Mahal, AgraJonathan Freundlich · CC BY-SA 3.0 · 来源 -
-
05 · 测量
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All Gizah PyramidsRicardo Liberato · CC BY-SA 2.0 · 来源 -
Shipping container stacks - Port of Rotterdam - 2017 - 5AgainErick · CC BY-SA 4.0 · 来源
06 · 三角学
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Tour Eiffel - 20150801 15h30 (10621)Another one of my pictures: This photograph was taken by Medium69 (William Crochot) and released under the license stated below. You are free to use it for any purpose as long as you credit the author (William Crochot), the Source (Wikimedia Commons) and the license (CC-BY-SA 4.0) in close relation to the image. Please do not upload an updated image here without consultation with the Author. The author would like to make corrections only at his own source RAW. This ensures that the changes are preserved.Please if you think that any changes should be required, please inform the author.Otherwise you can upload a new image with a new name. Please use one of the templates derivative or extract · CC BY-SA 4.0 · 来源 -
London Eye at sunset 2013-07-19Bob Collowan · CC BY-SA 3.0 · 来源
07 · 变换与向量
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Sailboat with spinnaker 17RM0454Ermell · CC BY-SA 4.0 · 来源 -
08 · 概率
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Dice (typical role playing game dice)Diacritica · CC BY-SA 3.0 · 来源 -
09 · 统计
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Galton boxExhibit made by Estes Objethos Atelier, photo by Rodrigo.Argenton · CC BY-SA 4.0 · 来源 -
IGCSE 物理
01 · 运动、力与能量
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Windmills D1-D4 (Thornton Bank)Hans Hillewaert · CC BY-SA 4.0 · 来源 -
Cedar Point Rougarou cars on loop track (2859)Bobby Proffer · CC BY-SA 3.0 · 来源 -
Hoover Dam, Nevada (Arizona-Nevada, USA), Staumauer -- 2012 -- 6102Dietmar Rabich · CC BY-SA 4.0 · 来源 -
Analytical balance mettler ae-260US DEA · Public domain · 来源 -
02 · 热学
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2023 Termometr kuchennyJacek Halicki · CC BY-SA 4.0 · 来源
03 · 波
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DispersionPrismeKilohn limahn · CC BY-SA 4.0 · 来源 -
A bunch of optic fibres made of plasticAmangeldyurazov · CC BY-SA 4.0 · 来源 -
Convex lens (magnifying glass) and upside-down imageAntanO · CC BY-SA 4.0 · 来源 -
USB microphoneLogitech · Product image · 来源 -
04 · 电与磁
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Magnetic field patternMaciej J. Mrowinski · CC BY-SA 4.0 · 来源 -
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U.S. Department of Energy - Science - 271 031 001 (23897761873)U.S. Department of Energy from United States · Public domain · 来源 -
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Raitersaich SK DSC 0028Simon Koopmann · CC BY-SA 3.0 de · 来源 -
3 ResistorsAfrank99 · CC BY-SA 2.5 · 来源
05 · 核物理
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Doel nuclear power plantAd Meskens · CC BY-SA 3.0 · 来源 -
Capt. Candice Adams Ismirle waits to receive a radiation treatment Oct. 22, 2013, at Walter Reed National Military Medical Center in Bethesda, MdStaff Sgt. Russ Scalf · Public domain · 来源 -
Portable Geiger counter Berthold LB122-02Lilly_M · CC BY-SA 3.0 · 来源
06 · 空间物理
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The SunNASA/SDO (AIA) · Public domain · 来源 -
SaturnNASA / JPL / Space Science Institute · Public domain · 来源 -
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MarsESA & MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA, CC BY-SA 3.0 IGO · CC BY-SA 3.0 igo · 来源 -
Whirlpool GalaxyNASA and European Space Agency · Public domain · 来源 -
FullMoon2010Gregory H. Revera · CC BY-SA 3.0 · 来源 -
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Oldest Light in the Universe (SVS30133)NASA's Scientific Visualization Studio - Marit Jentoft-Nilsen, Global Science and Technology, Inc./Mark Malanoski · Public domain · 来源 -
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ISS Aug2005NASA · Public domain · 来源
英语语法 · A1
08 · Topic 08
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Full English breakfast at the Chalet Cafe, Cowfold, West Sussex, EnglandAcabashi · CC BY-SA 4.0 · 来源
英语语法 · A2
09 · Topic 09
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DFC 2099 A bustling market stall piled high with bright green grapes and other fresh fruit as a vendor hands a bag to a customer - a colorful scene of everyday produce tradePattayaPatrol · CC BY-SA 4.0 · 来源
Python 参考
数据来源
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HSK 词汇——英/汉训练器
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中文阅读——新闻阅读器
模拟实验
Learn 和 Know 页面链接的交互式模拟由 PhET Interactive Simulations(科罗拉多大学博尔德分校)提供,采用 CC BY 4.0 授权。
A-Level 生物
A-Level 化学
- Acid-Base Solutions · CC BY 4.0
- Atomic Interactions · CC BY 4.0
- Beer's Law Lab · CC BY 4.0
- Build a Molecule · CC BY 4.0
- Build an Atom · CC BY 4.0
- Concentration · CC BY 4.0
- Gas Properties · CC BY 4.0
- Gases Intro · CC BY 4.0
- Isotopes and Atomic Mass · CC BY 4.0
- Models of the Hydrogen Atom · CC BY 4.0
- Molarity · CC BY 4.0
- Molecule Polarity · CC BY 4.0
- Molecule Shapes · CC BY 4.0
- Molecules and Light · CC BY 4.0
- pH Scale · CC BY 4.0
- Reactants · CC BY 4.0
A-Level 高等数学
- Balancing Act · CC BY 4.0
- Calculus Grapher · CC BY 4.0
- Collision Lab · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Hooke's Law · CC BY 4.0
- Masses and Springs · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Projectile Sampling Distributions · CC BY 4.0
- Vector Addition · CC BY 4.0
- Vector Addition: Equations · CC BY 4.0
A-Level 数学
- Calculus Grapher · CC BY 4.0
- Center and Variability · CC BY 4.0
- Collision Lab · CC BY 4.0
- Energy Skate Park: Basics · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Function Builder · CC BY 4.0
- Graphing Lines · CC BY 4.0
- Graphing Quadratics · CC BY 4.0
- Graphing Slope-Intercept · CC BY 4.0
- Plinko Probability · CC BY 4.0
- Projectile Data Lab · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Projectile Sampling Distributions · CC BY 4.0
- Trig Tour · CC BY 4.0
- Vector Addition · CC BY 4.0
- Vector Addition: Equations · CC BY 4.0
A-Level 物理
- Balancing Act · CC BY 4.0
- Blackbody Spectrum · CC BY 4.0
- Build an Atom · CC BY 4.0
- Buoyancy Basics · CC BY 4.0
- Capacitor Lab: Basics · CC BY 4.0
- Charges and Fields · CC BY 4.0
- Circuit Construction Kit: DC · CC BY 4.0
- Collision Lab · CC BY 4.0
- Coulomb's Law · CC BY 4.0
- Density · CC BY 4.0
- Energy Forms and Changes · CC BY 4.0
- Energy Skate Park: Basics · CC BY 4.0
- Faraday's Electromagnetic Lab · CC BY 4.0
- Faraday's Law · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Gas Properties · CC BY 4.0
- Generator · CC BY 4.0
- Gravity and Orbits · CC BY 4.0
- Gravity Force Lab · CC BY 4.0
- Hooke's Law · CC BY 4.0
- Magnet and Compass · CC BY 4.0
- Magnets and Electromagnets · CC BY 4.0
- Masses and Springs · CC BY 4.0
- Models of the Hydrogen Atom · CC BY 4.0
- Normal Modes · CC BY 4.0
- Ohm's Law · CC BY 4.0
- Pendulum Lab · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Resistance in a Wire · CC BY 4.0
- Rutherford Scattering · CC BY 4.0
- States of Matter: Basics · CC BY 4.0
- Under Pressure · CC BY 4.0
- Vector Addition · CC BY 4.0
- Wave Interference · CC BY 4.0
- Wave on a String · CC BY 4.0
- Waves Intro · CC BY 4.0
AP 生物
AP 微积分 AB
AP 微积分 BC
AP 化学
- Acid-Base Solutions · CC BY 4.0
- Atomic Interactions · CC BY 4.0
- Beer's Law Lab · CC BY 4.0
- Build a Molecule · CC BY 4.0
- Build an Atom · CC BY 4.0
- Concentration · CC BY 4.0
- Energy Forms and Changes · CC BY 4.0
- Gas Properties · CC BY 4.0
- Isotopes and Atomic Mass · CC BY 4.0
- Models of the Hydrogen Atom · CC BY 4.0
- Molarity · CC BY 4.0
- Molecule Polarity · CC BY 4.0
- Molecule Shapes · CC BY 4.0
- pH Scale · CC BY 4.0
- Reactants · CC BY 4.0
- States of Matter: Basics · CC BY 4.0
AP 环境科学
AP 物理 1
- Balancing Act · CC BY 4.0
- Buoyancy Basics · CC BY 4.0
- Collision Lab · CC BY 4.0
- Density · CC BY 4.0
- Energy Skate Park: Basics · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Gravity and Orbits · CC BY 4.0
- Gravity Force Lab · CC BY 4.0
- Hooke's Law · CC BY 4.0
- Masses and Springs · CC BY 4.0
- Pendulum Lab · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Under Pressure · CC BY 4.0
- Vector Addition · CC BY 4.0
AP 物理 2
- Balloons and Static Electricity · CC BY 4.0
- Bending Light · CC BY 4.0
- Blackbody Spectrum · CC BY 4.0
- Build a Nucleus · CC BY 4.0
- Capacitor Lab: Basics · CC BY 4.0
- Charges and Fields · CC BY 4.0
- Circuit Construction Kit: DC · CC BY 4.0
- Coulomb's Law · CC BY 4.0
- Energy Forms and Changes · CC BY 4.0
- Faraday's Law · CC BY 4.0
- Gas Properties · CC BY 4.0
- Gases Intro · CC BY 4.0
- Generator · CC BY 4.0
- Geometric Optics: Basics · CC BY 4.0
- Magnet and Compass · CC BY 4.0
- Magnets and Electromagnets · CC BY 4.0
- Models of the Hydrogen Atom · CC BY 4.0
- Normal Modes · CC BY 4.0
- Ohm's Law · CC BY 4.0
- Resistance in a Wire · CC BY 4.0
- Rutherford Scattering · CC BY 4.0
- States of Matter · CC BY 4.0
- Wave Interference · CC BY 4.0
- Wave on a String · CC BY 4.0
- Waves Intro · CC BY 4.0
AP 物理 C:电磁学
- Capacitor Lab: Basics · CC BY 4.0
- Charges and Fields · CC BY 4.0
- Circuit Construction Kit: DC · CC BY 4.0
- Coulomb's Law · CC BY 4.0
- Faraday's Electromagnetic Lab · CC BY 4.0
- Faraday's Law · CC BY 4.0
- Magnet and Compass · CC BY 4.0
- Magnets and Electromagnets · CC BY 4.0
- Ohm's Law · CC BY 4.0
- Resistance in a Wire · CC BY 4.0
AP 物理 C:力学
- Balancing Act · CC BY 4.0
- Collision Lab · CC BY 4.0
- Energy Skate Park: Basics · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Gravity and Orbits · CC BY 4.0
- Gravity Force Lab · CC BY 4.0
- Hooke's Law · CC BY 4.0
- Masses and Springs · CC BY 4.0
- Pendulum Lab · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Vector Addition · CC BY 4.0
AP 预备微积分
AP 心理学
AP 统计学
IGCSE 生物
IGCSE 化学
- Acid-Base Solutions · CC BY 4.0
- Balancing Chemical Equations · CC BY 4.0
- Build a Molecule · CC BY 4.0
- Build an Atom · CC BY 4.0
- Diffusion · CC BY 4.0
- Greenhouse Effect · CC BY 4.0
- Isotopes and Atomic Mass · CC BY 4.0
- Molecule Shapes: Basics · CC BY 4.0
- Molecules and Light · CC BY 4.0
- pH Scale · CC BY 4.0
- pH Scale: Basics · CC BY 4.0
- Reactants · CC BY 4.0
- States of Matter · CC BY 4.0
- States of Matter: Basics · CC BY 4.0
IGCSE 数学
- Area Builder · CC BY 4.0
- Calculus Grapher · CC BY 4.0
- Center and Variability · CC BY 4.0
- Curve Fitting · CC BY 4.0
- Equality Explorer · CC BY 4.0
- Equality Explorer: Two Variables · CC BY 4.0
- Expression Exchange · CC BY 4.0
- Function Builder · CC BY 4.0
- Graphing Lines · CC BY 4.0
- Graphing Quadratics · CC BY 4.0
- Graphing Slope-Intercept · CC BY 4.0
- Least-Squares Regression · CC BY 4.0
- Mean: Share and Balance · CC BY 4.0
- Plinko Probability · CC BY 4.0
- Proportion Playground · CC BY 4.0
- Ratio and Proportion · CC BY 4.0
- Trig Tour · CC BY 4.0
- Unit Rates · CC BY 4.0
- Vector Addition · CC BY 4.0
IGCSE 物理
- Balloons and Static Electricity · CC BY 4.0
- Bending Light · CC BY 4.0
- Blackbody Spectrum · CC BY 4.0
- Build a Nucleus · CC BY 4.0
- Build an Atom · CC BY 4.0
- Buoyancy: Basics · CC BY 4.0
- Circuit Construction Kit: DC · CC BY 4.0
- Collision Lab · CC BY 4.0
- Density · CC BY 4.0
- Diffusion · CC BY 4.0
- Energy Forms and Changes · CC BY 4.0
- Energy Skate Park: Basics · CC BY 4.0
- Faraday's Electromagnetic Lab · CC BY 4.0
- Faraday's Law · CC BY 4.0
- Forces and Motion: Basics · CC BY 4.0
- Friction · CC BY 4.0
- Gas Properties · CC BY 4.0
- Generator · CC BY 4.0
- Geometric Optics: Basics · CC BY 4.0
- Gravity and Orbits · CC BY 4.0
- Gravity Force Lab: Basics · CC BY 4.0
- Isotopes and Atomic Mass · CC BY 4.0
- Kepler's Laws · CC BY 4.0
- Magnet and Compass · CC BY 4.0
- Magnets and Electromagnets · CC BY 4.0
- Ohm's Law · CC BY 4.0
- Projectile Motion · CC BY 4.0
- Resistance in a Wire · CC BY 4.0
- Rutherford Scattering · CC BY 4.0
- States of Matter: Basics · CC BY 4.0
- Under Pressure · CC BY 4.0
- Wave on a String · CC BY 4.0
- Waves Intro · CC BY 4.0