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【简答题】晶闸管的换相重叠角与电路的 、 、 、 等到参数有关。
【简答题】晶闸管的换相重叠角与电路的____、____、____、____等有关。
【单选题】Man: I hear you have been working part-time. Woman: Yeah, I must stand on my own feet. My parents are retired and their health is declining. Question: What does the woman mean?
A.
She has recovered from an injury.
B.
She does not depend on her parents anymore.
C.
Her parents used to enjoy good health.
D.
Her parents used to have a good job.
【简答题】晶闸管整流电路的换相重叠角与（）、（）和负载电流有关。
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