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【单选题】
某平面任意力系向O点简化,得到F=10N, ,方向如图所示。若将该力系向A点简化,则得到A.
F=10N， ；
B.
F=10N，；
C.
,F=10N；
D.
F=0， 。
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举一反三
【判断题】D. GM’s largest a supplier, Delphi, went bankrupt this October after heavy losses
A.
正确
B.
错误
【单选题】— You are never worried before exams. How can you do that? — Well, I've been studying hard all the time. Surely I'm _____ any exam. [ ]
A.
angry at
B.
busy with
C.
ready for
【单选题】Read and choose the best answer to complete the dialogue. Lin: Hi! Is that the new laptop you bought last week? It looks very nice.Feng: Yes, it is. Thanks. I’m just surfing on the internet. Lin: ...
A.
what chat tools do you have on your laptop
B.
have you installed some software in your computer
C.
what software programs do you have on your laptop
D.
is there a wireless Internet connection here
【简答题】在应收款系统中，所有账龄区间都可以根据需要修改和删除。（ ）
【单选题】----Do you mind if I turn on the radio?
A.
You’re welcome
B.
Excuse me
C.
How can you do that?
D.
I ’m sorry, but I do
【判断题】d. GM’s largest supplier, Delphi, went bankrupt this October after heavy losses.
A.
正确
B.
错误
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