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问题 多项选择题

在下列情况下，一般不使用切削液的有（）。

A.刨削铸铁工件的平面

B.在碳钢工件上铰孔

C.硬质合金刀精车碳钢工件

D.铣削45钢轴上的键槽

E.镗削铸铁件内孔

答案

参考答案：A, C, E

句型转换

句型转换。

1. The dog is standing on the chair. (就画线部分提问)

    _____ _____ the dog standing?

2. We moved here in the 1700s. (就划线部分提问)

    _____ _____ you _____ here?  

3. Maria often watches TV at home in the evening. (改为一般疑问句 )

    _____ Maria  _____ _____ TV at home in the evening ?

4. There is some milk in the bottle. (改为一般疑问句并做否定回答)

    _____ _____ _____ milk in the bottle? No _____ _____.

5. Today is New Year's Day. (就划线部分提问)

    _____ _____ is today?
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选择题

His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽)

A．that

B．how

C．who

D．what
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