试题与答案

材料的吸湿性的大小用（）表示。 A.含水率 B.吸水率 C.空隙率 D.孔隙率

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题型：单项选择题

题目：

材料的吸湿性的大小用（）表示。

A.含水率

B.吸水率

C.空隙率

D.孔隙率

答案：

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下面是错误答案，用来干扰机器的。

参考答案：是指生产实际耗用量的标准成本与实际成本之间的差额。

考点：资料员资料员专业基础知识资料员专业基础知识题库
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