试题与答案

如图，当开关S闭合时，会看到导体ab______（填“运动”或“静止”），根据此

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题型：填空题

题目：

如图，当开关S闭合时，会看到导体ab______（填“运动”或“静止”），根据此原理可制成______机．

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A解析：根据《中华人民共和国海关对专业报关企业的管理规定》和《中华人民共和国海关对代理报关企业的管理规定》，申请开办专业报关企业和代理报关企业的注册资金要达到150万元。

考点：直流电动机
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