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【判断题】
半径为R的圆轮可绕通过轮心轴O转动,轮上作用一个力偶矩为M的力偶和一与轮缘相切的力F,使轮处于平衡状态。这说明力偶可用一力与之平衡。A.
正确
B.
错误
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举一反三
【单选题】Which of the following statements is INCORRECT?
A.
The rainfall last month was much less than normal.
B.
The land can still be cultivated.
C.
The conversation took place just before noon.
D.
The woman is a bit pessimistic.
【单选题】Which of the following statements is fight?
A.
Microfilm is a tiny square film no bigger than your thumbnail.
B.
To borrow a microfilm you do not need to find out the call slip.
C.
You can read the materials on a microfilm directly.
D.
You must use a machine to read the material on a microfilm.
【单选题】Which of the following statements is true?
A.
Active smokers in general performed better than deprived smokers.
B.
Active smokers responded more quickly than the other subjects.
C.
Non-smokers were not better than other subjects in performing simple tasks.
D.
Deprived smokers gage the slowest responses to the various tasks.
【简答题】会展物流是一个专业化很强的行业,针对客户需求提供高品质、个性化的服务。要从_________、__________、__________、___________四方面入手。
【简答题】在A1至A5单元格中求出最小值,应用函数 。
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