试题与答案

电路的组成和作用是什么？

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题型：问答题 简答题

题目：

电路的组成和作用是什么？

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C

考点：电力生产“1000个为什么”锅炉运行与检修锅炉运行与检修题库
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