赞题库-背景图

单项选择题

Z=50-j50欧姆，表明该电路为()电路。

A.感性
B.容性
C.其它

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热门试题

单项选择题We should pay attention to () carefully.

A.learn
B.learning
C.to learn
D.have learned

单项选择题() his wealth, he is not happy.

A.Because of
B.In spite of
C.Except for
D.Besides