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直流斩波电路是一种( )变换电路。

A、AC/AC

B、DC/AC

C、DC/DC

D、AC/DC

时间：2021-07-17 23:24 关键词：电力系统自动化技术高起专电力电子技术 2019级毕业清考（考试分） 2020年第二学期补考

答案解析

C

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