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【多选题】
高压系统短路电流的计算条件是( )。
A.
短路前三相系统是正常运行情况下的接线方式，不考虑仅在切换过程中短时出现的接线方式
B.
设定短路回路各元件的磁路系统为饱和状态，即认为各元件的感抗为一个常数
C.
电路电容和变压器的励磁电流略去不计
D.
在短路持续时间内，短路相数不变，如三相短路保持三相短路，单相接地短路保持单相接地短路
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举一反三
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【单选题】According to the lecture, why do the most well-known scholars still find the meaning of the painting beyond their understanding?
A.
Picasso completed the painting in only two months.
B.
The bombardment of Guernica was so brutal.
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D.
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B.
The exhibition introduced Cart to an entirely new style. of painting.
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查看完整题目与答案
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A.
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B.
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C.
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B.
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A.
He wanted to be a poet.
B.
He wanted to travel around the world.
C.
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D.
He couldn’t earn enough money.
查看完整题目与答案
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A.
It was easy to use outdoors,
B.
It was a strong medium.
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查看完整题目与答案