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( )是依靠专门的换流回路使晶闸管在需要的时刻关断

单选题
2022-04-02 12:50
A、负载振荡式换流
B、强迫换流
C、可关断晶闸管换流
D、大功率晶体管换流
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正确答案
B

试题解析

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