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【单选题】
短路次暂态电流是（）的短路电流周期分量有效值。A.
短路后半个周期；
B.
短路后第一个周期。
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反馈参考答案：
举一反三
【单选题】I people believe that work has a virtue in its own right, they will do al the following EXCEPT ______.
A.
see idleness as a vice
B.
try their best not to be idle
C.
not accept a privileged class
D.
inquire into social distinctions
【单选题】Which of the following names is NOT used for EMS?
A.
Datapost
B.
Chronopost
C.
Al-Barid al Mumtaz
D.
TNT Skypack
【单选题】以下代码输出的结果是()
A.
Array([1]=>I [2]=>love [3]=>play [4]=>basketball)
B.
Array([0]=>I [1]=>love [2]=>play [3]=>basketball)
C.
I love play basketball
D.
代码错误
【单选题】Which of the following description about Al Gore is NOT true? The following are the descriptions about Al Gore exceptThe following are the descriptions about Al GoreThe following are the descriptions...
A.
He was the former vice president of the United States.
B.
He is the author of Earth in the Balance: Ecology and the Human Spirit.
C.
He is the author of An Inconvenient Truth.
D.
He is the winner of the Nobel Literature Prize
【单选题】Which of the following names is NOT used for EMS?
A.
Datapost
B.
Chronopost
C.
A1-Barid al Mumtaz
D.
TNT Skypack
【单选题】All of the following statements are true of climate scientists EXCEPT ______.
A.
they are all clued up about climate.
B.
they don't know much about climate.
C.
they are probing into the field of climate.
D.
they are uncertain of climatic phenomena.
【单选题】Which of the following is mentioned as a plan of Al-Qaeda?
A.
To arrest the suspected militants.
B.
To attack oil installation in Saudi Arabia.
C.
To detain those from Saudis, Yemen, etc.
D.
To reinforce the relationship with Yemen.
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