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【单选题】
质量为m的小球,放在光滑的木板和光滑的墙壁之间,并保持平衡,如图所示. 设木板和墙壁之间的夹角为a,当a逐渐增大时,小球对木板的压力将
A.
增加
B.
减少
C.
不变
D.
先是增加，后又减小．压力增减的分界角为a＝45°
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B.
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B.
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C.
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【单选题】一种规律呼吸几次后,突停一段时间又开始呼吸,周而复始的呼吸
A.
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E.
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A.
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C.
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【单选题】Why can't a computer translation substitute for knowledge of different languages?
A.
Because computer can alleviate much drudgery.
B.
Because computer is always behind the times.
C.
Because computer can't get the inner meaning of words.
D.
Because computer has no sensation.
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A.
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B.
客服中心
C.
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D.
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【单选题】Why different diseases can be treated with the same therapy?
A.
because different disease may have the same symptoms
B.
because different disease may have the different symptoms
C.
because different disease may have the same signs
D.
because different disease may have the same syndromes
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【单选题】Why can different number system measure a same thing?
A.
They have the same weight.
B.
They have the same radix.
C.
They use different magnitudes to measure physical items and express them as different stytle, but subjects are the same.
D.
None of above.
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【单选题】Why can Venice give you different?
A.
Because you can visit the Vatican City there.
B.
Because you can enjoy works of famous artists like Caravaggio, Rembrandt and many others there.
C.
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D.
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相关题目：
【单选题】一种规律呼吸几次后,突停一段时间又开始呼吸,周而复始的呼吸
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潮式呼吸
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A.
Because computer can alleviate much drudgery.
B.
Because computer is always behind the times.
C.
Because computer can't get the inner meaning of words.
D.
Because computer has no sensation.
查看完整题目与答案
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A.
安检员
B.
客服中心
C.
站厅巡视员
D.
值班室
查看完整题目与答案
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A.
because different disease may have the same symptoms
B.
because different disease may have the different symptoms
C.
because different disease may have the same signs
D.
because different disease may have the same syndromes
查看完整题目与答案
【单选题】Why can different number system measure a same thing?
A.
They have the same weight.
B.
They have the same radix.
C.
They use different magnitudes to measure physical items and express them as different stytle, but subjects are the same.
D.
None of above.
查看完整题目与答案
【单选题】Why can Venice give you different?
A.
Because you can visit the Vatican City there.
B.
Because you can enjoy works of famous artists like Caravaggio, Rembrandt and many others there.
C.
Because you can take a tour around the place in the gondolas and see its famous bridges and churches.
D.
Because you can go partying there at night.
查看完整题目与答案