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【判断题】
滚子从动件凸轮机构适用于速度不高、载荷较大的场合。（ ）A.
正确
B.
错误
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【简答题】短文改错。 When my eighth birthday came, I was not in home. In order to celebrate (庆祝) such important day with my dear parents, I wrote a long letter, in which I thanked him for having raised me for 18...
【简答题】露天水池,水深5m处的相对压强为
【简答题】The flood of migrants into Europe is it obvious that dialogue and agreement are necessary, to better protect the EU's external borders and reduce the pressure on affected countries. But as Edwa...
【单选题】What is the man who was buying stock trying to show?
A.
That every penny counts.
B.
He is important.
C.
He is talktive.
D.
That stocks are very important.
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