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"Basic Nutrients" Organic Compounds PPT Lesson (Micro Topic Identification, Testing and Removal of Common Organic Compounds)
下载 276 次
2023-10-05 09:32:16
"Classification of Elements and Matter" Elements and the Material World PPT (an important mixture in Lesson 2 - colloid)
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2023-09-25 18:21:38
"The Trend of the Times for Peaceful Development, Cooperation and Win-win" PPT courseware on the characteristics and main trends of contemporary world development
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2023-09-20 15:15:42
"Sodium and Its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 1: Active metal element - sodium)
下载 650 次
2023-09-20 15:12:40
"Photosynthesis absorbs carbon dioxide and releases oxygen" PPT courseware on carbon-oxygen balance in green plants and the biosphere
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2023-09-25 18:29:05
"Sulfur and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 1 Sulfur and Sulfur Dioxide)
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2023-09-25 17:34:00
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 4
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2023-10-05 09:32:25
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 3
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2023-09-25 18:27:36
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 6
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2023-09-25 18:27:35
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 6
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2023-10-05 09:28:56
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 2
下载 425 次
2023-09-25 18:29:05
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 5
下载 472 次
2023-10-05 09:32:25
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 5
下载 885 次
2023-09-25 18:27:36
"Nitrogen and Its Compounds" Important non-metallic elements in chemical production PPT (Lesson 3: Nitric acid rain and its prevention and control)
下载 610 次
2023-09-25 17:33:59
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 7
下载 283 次
2023-10-05 09:28:56
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 4
下载 982 次
2023-09-25 18:27:35
"Photosynthesis absorbs carbon dioxide and releases oxygen" Carbon-oxygen balance in green plants and biosphere PPT courseware 7
下载 748 次
2023-09-25 18:27:35
"Sufficient Conditions and Necessary Conditions" collection and common logical terms PPT (Lesson 1 Sufficient Conditions and Necessary Conditions)
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2023-09-25 17:29:12
"Classification of Elements and Matter" PPT courseware of elements and the world of matter (an important mixture in Lesson 2 - colloid)
下载 922 次
2023-09-25 17:34:04
"Rational Use of Chemicals" Chemistry and Sustainable Development PPT Courseware (Safe Use of Food Additives in Lesson 2)
下载 767 次
2023-10-05 09:39:15
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