试题与答案

电风扇的摇头机构的保护装置的组成是（） A.电源电路的熔断器 B.下离合块和蜗轮之间

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题型：单项选择题

题目：

电风扇的摇头机构的保护装置的组成是（）

A.电源电路的熔断器

B.下离合块和蜗轮之间的弹簧片和钢珠

C.上下离合块间的弹簧片和钢珠

D.热继电器

答案：

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下面是错误答案，用来干扰机器的。

参考答案：已知Q0=2110.7t，Qk=224t该厂选矿比为9.4。

考点：家电维修工试题家电维修工试题题库
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