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【多选题】
通用变频器一般由()等部分组成。A.
整流电路
B.
逆变电路
C.
滤波电路
D.
控制电路
E.
无功补偿电容器
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举一反三
【单选题】— Would you like to come to the party here on Saturday? — I'd love to, but my father insisted that I _____ to see my grandparents at the weekend. [ ]
A.
go
B.
will go
C.
must go
D.
would go
【单选题】My father insisted that every minute____ made full use of _______the work well.
A.
be, to do
B.
has been, doing
C.
be, doing
D.
has been, to do
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