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【简答题】
在RLC串联交流电路中，已知R=30 Ω，XL=80 Ω，XC=40 Ω，电流为2 A。试求：(1)电路阻抗；(2)电路的有功功率、无功功率和视在功率?(3)各元件上的电压有效值?(4)画出电路的。
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举一反三
【单选题】听力题 What does the man mean?
A.
He will send her a special gift if she buys the dress.
B.
He will sell her the dress in lower price if she feels insterested.
C.
He will reserve the dress in her size if she comes again.
D.
He will give her a discount if she comes earlier next time.
【多选题】《中国共产党纪律处分条例》以马克思列宁主义、毛泽东思想、 为指导,深入贯彻习近平总书记系列重要讲话精神,落实全面从严治党战略部署。
A.
邓小平理论
B.
“三个代表”重要思想
C.
党的群众路线
D.
科学发展观
【单选题】听力题 What does the man mean?
A.
Boxing is one of his favorite sports.
B.
Boxing is the only kind of sports he likes.
C.
He doesn't like boxing at all.
D.
He doesn' t like boxing very much.
【单选题】听力原文：W: Excuse me? How can I get to the park? M: There is a park here? What does the man mean?
A.
The park is nearby.
B.
He doesn't know about the park.
C.
There is no parking here.
D.
He doesn't understand the question.
【单选题】听力题 What does the man mean?
A.
His parents are heading home for the time coming.
B.
His parents are coming back this time next year.
C.
His parents live in another country at the moment.
D.
His parents settle down in another place from now on.
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