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【单选题】
'______' is the term used for the first ten amendments to the Constitution.
A.
The Articles of Confederation
B.
The Bill of Rights
C.
Checks and Balances
D.
The Human Rights Bill
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【单选题】取样频率的选择必须满足纳斯特取样定理,即对一个模拟信号进行取样时,要求取样()至少是该模拟信号上限频率的2倍。
A.
信号
B.
时间
C.
频率
D.
幅度
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【单选题】The theory was attacked ten years ago when it was first______, but gradually it was accepted.
A.
promoted
B.
enhanced
C.
advanced
D.
conceived
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【单选题】听力原文:W: We have made ten copies. M: At first it's planned to need ten copies, and now we don't need so many. Four would be enough. Q: How many unnecessary copies they have made? (4)
A.
Five.
B.
Three.
C.
Four.
D.
Six.
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【单选题】When is the intermission?
A.
It will be in ten minutes.
B.
It will follow the first piece.
C.
It will be before the first piece of the evening.
D.
It will be at the final performance of the season.
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【单选题】The first modern Olympics attracted athletes from ten countries.
A.
Y
B.
N
C.
NG
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【单选题】图样中绘制斜度及锥度符号时,其线宽为:( )
A.
h/14(h为字体高度)
B.
h/10
C.
d/2(d为粗实线线宽)
D.
d/3
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【单选题】MCS-51 单片机对内部脉冲计数实现的是( )功能。
A.
计数器
B.
定时器
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【单选题】图样中绘制斜度及锥度符号时,其线宽为________。
A.
h/14(h为字体高度)
B.
h/10
C.
d/2(d为粗实线线宽)
D.
d/3
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【判断题】重整催化剂的积炭失活可以采用一定限度内提高反应温度的办法补偿。
A.
正确
B.
错误
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【判断题】重整催化剂的积炭失活可以采用一定限度内提高反应温度的办法补偿。( )
A.
正确
B.
错误
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