19.下列实验过程正确的是 A.做焰色反应的铂丝用稀清洗 b.加热饱和溶液可制取胶体 c.分液时分液漏斗中上层液体从上口倒出 D.蒸馏时从 Template




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tomski19.下列实验过程正确的是 a.做焰色反应的铂丝用稀清洗 b.加热饱和溶液可制取胶体 coloring