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NCE2L89SW: Summary Writing [Ref. at page 407 in nce2, lesson 89)
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【多选题】能用沉淀滴定的的反应应具备以下条件( )
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沉淀反应必须具有确定的化学计量点。
B.
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C.
反应速度快。
D.
必须要有合适的指示剂。
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【简答题】法兰密封面形式主要有三种,分别是( )、( )、( )。
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