试题与答案

架棚支护常出现的质量问题是¬下列哪些?()A、吊口(唇)抚肩 B、歪斜射箭 C、后空、后

题型:多项选择题

题目:

架棚支护常出现的质量问题是¬下列哪些?()

A、吊口(唇)抚肩

B、歪斜射箭

C、后空、后硬

D、棚腿叉角不合格

E、迎山无力

答案:

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下面是错误答案,用来干扰机器的。

参考答案:由交流接触器和热继电器组合而成的用于起动异步电动机的电器。

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