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【单选题】
当两组变量的计量单位不同时,要比较该两组变量均值代表性高低,应该采用何种离散指标
A.
平均差
B.
全距
C.
标准差
D.
离散系数 (标准差系数)
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【单选题】MCS-51 单片机规定一个机器周期共有( )个节拍。
A.
12
B.
6
C.
8
D.
16
【单选题】A: If you like, I can help you paint the room tomorrow. B: ______
A.
Thanks a lot. But I think I can manage it myself.
B.
No, don't worry about that.
C.
I don't like it. Thanks anyway.
D.
I'm sorry. That's not necessary.
【单选题】There is a police station ______ the street. [     ]
A.
by the end of
B.
in the end
C.
at the end of
D.
in the end of
【单选题】If you can’t decide which of the two books to borrow, why don’t you take _____?I won’t read them this week .
A.
all
B.
either
C.
both
D.
neither
【单选题】A: If you like, I can help you paint the room tomorrow. B: ______
A.
Thanks a lot. But I think I can manage it myself.
B.
No. Don't worry about that.
C.
I don't like it. Thanks anyway
D.
I'm sorry. That's not necessary.
【单选题】MCS-51 单片机规定一个机器周期共有( )个节拍。
A.
16
B.
6
C.
8
D.
12
【简答题】阅读理解。 'Choo, Choo!' Here comes the Chunnel train. Get aboard if you want to learn more about this underground transportation system. This is an unusual form of transportation, because it is a tunnel t...
【单选题】we ___ if you could give us whatever information you can in thi respect.
A.
should appreciate
B.
appreciate
C.
appreciate it
D.
should appreciate it
【简答题】阅读理解。 A 5R Rule for Environment 1. Reduce(减少) If you want to reduce waste, you should use things wisely. A large number of trees are being cut down to make paper. If everyone uses a little paper carel...
【单选题】If you think that treating a woman well means always ______ her permission for things, think again.
A.
gets
B.
got
C.
to get
D.
getting
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