试题与答案

下列哪些单位现在已经不再采用了（）。A、kgf/cm3 B、MPa C、Mg/m3

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题型：多项选择题

题目：

下列哪些单位现在已经不再采用了（）。

A、kgf/cm3

B、MPa

C、Mg/m3

D、克分子浓度

答案：

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