得出銀的百分比為0.085%...。當時就想怎麽這麽低呢,但轉念一想,銀是貴重金屬,可能很稀有.........
結果被扣掉5分,化學考了95。
得出銀的百分比為0.085%...。當時就想怎麽這麽低呢,但轉念一想,銀是貴重金屬,可能很稀有.........
結果被扣掉5分,化學考了95。
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