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【单选题】
内部过电压的倍数规定为内部过电压幅值与其电网工频相电压的（）之比值。A.
有效值
B.
幅值
C.
2倍幅值
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【单选题】Michael: The Johnsons are moving next week. We are going to have a going-away party for them Saturday. Tracy: I didn't realize they were moving so soon. ______ Michael: Yes, but we'll have one last ch...
A.
Wish them a happy journey.
B.
May they have a more comfortable home.
C.
They are really going to be missed.
D.
We can't stay together forever, can we?
【单选题】A. Are there high jump and long jump ? B. Sure, I’d love to . C. What’s it ? D. Teachers of our school will have a basketball game against those of No.3 Middle School. E. When will the meet begin ? A:...
A.
B.
C.
D.
E.
E
【单选题】A. Are there high jump and long jump ? B. Sure, I’d love to . C. What’s it ? D. Teachers of our school will have a basketball game against those of No.3 Middle School. E. When will the meet begin ? A:...
A.
B.
C.
D.
E.
E
【单选题】--What are you going to do this afternoon? --We are going to have a football match if it__
A.
will rain
B.
rained
C.
doesn’t rain
【单选题】A. Are there high jump and long jump ? B. Sure, I’d love to . C. What’s it ? D. Teachers of our school will have a basketball game against those of No.3 Middle School. E. When will the meet begin ? A:...
A.
B.
C.
D.
E.
E
【单选题】A. Are there high jump and long jump ? B. Sure, I’d love to . C. What’s it ? D. Teachers of our school will have a basketball game against those of No.3 Middle School. E. When will the meet begin ? A:...
A.
B.
C.
D.
E.
E
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