试题与答案

阀门的手动装置一般有手轮、手柄、()和远距离手动装置几种形式。 A.电动装置 B.扳

题型:单项选择题

题目:

阀门的手动装置一般有手轮、手柄、()和远距离手动装置几种形式。

A.电动装置

B.扳手

C.气动装置

D.蜗轮蜗杆

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错

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题型:单项选择题

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