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【单选题】
三相半波可控整流电路在换,换相重叠角 y 的大小与哪几个参数有关( )A.
a 、 l 、 XL 、 U2
B.
a 、 lg
C.
a 、 U
D.
U2 、 X[
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举一反三
【单选题】Have you seen the film Titanic, leading actor is world famous.
A.
its
B.
it’s
C.
whose
D.
which
【单选题】Which of the following is believed to be one of the clues for the film Titanic?
A.
The maiden voyage of Titanic
B.
The life story of Jack
C.
The life story of Rose
D.
The love voyage between Cal and Rose
【单选题】Which is the following is believed to be one of the clues for the film Titanic?
A.
The love voyage between Cal and Rose
B.
The life story of Jack
C.
The life story of Rose
D.
The maiden voyage of Titanic
【单选题】图示桁架中,当仅增大桁架高度而其他条件不变时,对杆1和杆2的内力影响是【图片】
A.
F N1 , F N2 均减小
B.
F N1 , F N2 均不变
C.
F N1 减小 , F N2 不变
D.
F N1 增大 , F N2 不变
【简答题】发票分为增值税专用发票、普通发票和专业发票。（ ）
相关题目：
【单选题】Have you seen the film Titanic, leading actor is world famous.
A.
its
B.
it’s
C.
whose
D.
which
参考解析：
知识点：
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