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【单选题】
已知信号【图片】对其抽样时能恢复原信号最大的抽样周期为A.
1/4
B.
4
C.
1/（4PI）
D.
4PI
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举一反三
【简答题】How many guests will pay a visit to Beijing and Shanghai?
【单选题】Workers want more money and shorter working hours to_____.
A.
enjoy themselves more after work
B.
produce greater work flow
C.
show their great abilities
D.
challenge the management
【单选题】I prefer a university in Beijing to ______ in Shanghai, because Beijing is the cultural center of China.
A.
one
B.
that
C.
it
D.
this
【简答题】A．Cash would be no longer in use. B．There would be more safety guards. C．More prisons would be set up. D．People would be better off.
【单选题】${2>1?"beijing":"shanghai"}的结果为
A.
2>1?"beijing":"shanghai"
B.
‘2>1?"beijing":"shanghai"’
C.
"beijing":"shanghai"
D.
"beijing"
【简答题】装配图应该包括哪些内容?
【简答题】装配图上应该包括哪些内容？
【简答题】The use of cars is becoming more and more popular in the twentieth century. A large number of the world's population are now able to buy and use cars. Having a car gives much mobility（活动余地）, enabling ...
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