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问题详情

切空载变压器产生的过电压是因为（)

A、切空载时电源电压较高

B、变压器电流太大

C、电磁谐振

D、切断速度太快

时间：2021-09-01 20:45 关键词：联大河南理工大学电气工程及其自动化供电技术

答案解析

D

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