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【单选题】
_______ they may have, the CEO of the corporation calls on all the staff to gather their courage to strive it.
A.
What a serious problem
B.
However a serious problem
C.
How serious a problem
D.
Whatever a serious problem
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参考答案：
举一反三
【多选题】选择接触器时应考虑的条件是( )。
A.
选择触点的数量及触头类型
B.
选择主触点的额定电压和电流
C.
选择辅助触点的额定电压和电流
D.
选择吸引线圈的电压
查看完整题目与答案
【单选题】_____________, she is of great help in the work.
A.
A girl as she is
B.
Girl as she is
C.
The girl as she is
D.
Girls as she is
查看完整题目与答案
【单选题】Lightning is a __ ___of electrical current from a cloud to the ground or from one cloud to another.
A.
rush
B.
rainbow
C.
rack
D.
ribbon
查看完整题目与答案
【单选题】选择接触器触点数量和触点类型应满足( )的要求。
A.
控制电路
B.
主电路
C.
控制电路和主电路
D.
继电保护电路
查看完整题目与答案
【简答题】Computers _____ from abroad are usually more expensive.
查看完整题目与答案
【单选题】选择接触器的触点数量和触点类型应满足( )要求。
A.
控制电路
B.
主电路
C.
主电路和控制电路
D.
继电保护电路
查看完整题目与答案
【简答题】She is a cute,  quiet girl. As a daughter,  she has no secrets from her mother,  who is very pleased with her. But recently she has become somewhat mysterious,  and not so open as before. She has a di...
查看完整题目与答案
【单选题】The electric system is ( ).
A.
50 amperes
B.
380 volts
C.
50 hertz and 380 volt
查看完整题目与答案
【简答题】Their age is from 13 to 19. They are called t_______________.
查看完整题目与答案
【单选题】选择接触器的触点数量和触点类型应满足( )要求。
A.
（ A）控制电路
B.
（ B）主电路
C.
（ C）主电路和控制电路
D.
（ D）继电保护电路
查看完整题目与答案
相关题目：
【多选题】选择接触器时应考虑的条件是( )。
A.
选择触点的数量及触头类型
B.
选择主触点的额定电压和电流
C.
选择辅助触点的额定电压和电流
D.
选择吸引线圈的电压
查看完整题目与答案
【单选题】_____________, she is of great help in the work.
A.
A girl as she is
B.
Girl as she is
C.
The girl as she is
D.
Girls as she is
查看完整题目与答案
【单选题】Lightning is a __ ___of electrical current from a cloud to the ground or from one cloud to another.
A.
rush
B.
rainbow
C.
rack
D.
ribbon
查看完整题目与答案
【单选题】选择接触器触点数量和触点类型应满足( )的要求。
A.
控制电路
B.
主电路
C.
控制电路和主电路
D.
继电保护电路
查看完整题目与答案
【简答题】Computers _____ from abroad are usually more expensive.
查看完整题目与答案
【单选题】选择接触器的触点数量和触点类型应满足( )要求。
A.
控制电路
B.
主电路
C.
主电路和控制电路
D.
继电保护电路
查看完整题目与答案
【简答题】She is a cute,  quiet girl. As a daughter,  she has no secrets from her mother,  who is very pleased with her. But recently she has become somewhat mysterious,  and not so open as before. She has a di...
查看完整题目与答案
【单选题】The electric system is ( ).
A.
50 amperes
B.
380 volts
C.
50 hertz and 380 volt
查看完整题目与答案
【简答题】Their age is from 13 to 19. They are called t_______________.
查看完整题目与答案
【单选题】选择接触器的触点数量和触点类型应满足( )要求。
A.
（ A）控制电路
B.
（ B）主电路
C.
（ C）主电路和控制电路
D.
（ D）继电保护电路
查看完整题目与答案
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