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【判断题】
大齿轮带动小齿轮转动是属于减速运动A.
正确
B.
错误
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【简答题】 假定下表是需求函数: 在一定价格范围内的需求表。 (1)求出价格2元和4元之间的需求的价格弧弹性。 (2)根据给出的需求函数,求P=2元时的需求的价格点弹性。
【单选题】如果用户user01正工作在/usr/local目录中,然后他转去自己的用户主目录下的目录data中进行了一些工作,现在想转回之前工作的/usr/local目录,应该使用如下哪个命令?
A.
cd -
B.
cd ../..
C.
cd usr/local
D.
cd ~/usr/local
E.
cd
F.
cd .
【简答题】假定下表是需求函数Qd=1200-200P在一定价格范围内的需求表。 试求:(1)价格为2~4元的需求的价格弧弹性。 (2)根据给出的需求函数求出P=2元时的需求的价格点弹性。
【单选题】leson 41 Do you call that a hat-(清晰).f4v 1.The writer probably________.
A.
did't like the hat his wife had chosen
B.
liked the hat his wife had chosen
C.
chose a hat for his wife
D.
chose the hat that looked like a lighthouse
【简答题】假定表 1是需求函 数 在一定价格范围内的需求表: ( 1)求出价格2元和4元之间的需求的价格弧弹性。 ( 2)根据给出的需求函数,求P=2元时的需求的价格点弹性。
【单选题】Sitting opposite my sister and me in the subway who walked alongside us and tried to punch us on Fifth Avenue.
A.
were they the same men
B.
they were the same men
C.
were the same men
D.
the same men were
【单选题】Sitting opposite my sister and me in the subway ____ who walked alongside us and tried to punch us on the Fifth Avenue.
A.
were they the same men
B.
they were the same men
C.
were the same men
D.
the same men were
【单选题】(2013·吉林长春三校高三调研)Days later, I tried to get my sister to tell me what was going on, but she ________ say anything.
A.
mustn't
B.
shouldn't
C.
wouldn't
D.
mightn't
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