试题与答案

1磅(b)是多少公斤?

题型:问答题 简答题

题目:

1磅(b)是多少公斤?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:摩尔法用硝酸银滴定氯化钠时,用铬酸钾作指示剂。

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