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【判断题】
特征值问题: 的特征值为(nπ/ l2)特征函数是cos(nπx/l)A.
正确
B.
错误
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【简答题】Complete the following sentences by choosing the correct word from those given in brackets. 22. We have done (many, much) work today.
【简答题】在液压传动中,液压泵是( )元件,它将输入的( )能转换为( )能
【简答题】在液压传动中,液压泵是()元件,它将输入的()能转换成()能。
【单选题】We are late. I expect the film____ by the time we get to the cinema.
A.
has started
B.
will have started
C.
will start
D.
may start
【单选题】—Have you heard today’s weather forecast?—Yes. Better weather is____. We can expect an outing. A．
A.
22.—Have you heard today’s weather forecast? —Yes. Better weather is____. We can expect an outing. A．in the way
B.
by the way
C.
in this way
D.
on the way
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