试题与答案

造成机泵电机电流过大的外界原因是（）。A．转速降低 B．超负荷 C．机泵抽空 D．气

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题型：单项选择题

题目：

造成机泵电机电流过大的外界原因是（）。

A．转速降低

B．超负荷

C．机泵抽空

D．气温过高

答案：

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