Ch. 10 金屬的存在和提取
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Ch. 11 金屬的活潑性
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video link for explain DSE questions 28.07.20
Ch. 12 反應質量
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Ch. 13 金屬的腐蝕和保護
video link for summary and explain DSE questions 30.07.20
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video link 2
video link for explain DSE questions 27.07.20
Ch. 11 金屬的活潑性
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video link 2
video link for summary Ch.11 27.07.20
video link for explain DSE questions 28.07.20
Ch. 12 反應質量
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video link for summary Ch.12 28.07.20
video link for explain DSE questions 30.07.20
Ch. 13 金屬的腐蝕和保護
video link for summary and explain DSE questions 30.07.20
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