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【简答题】
listen and spell the words
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皮皮学刷刷变学霸
举一反三
【简答题】A．She recently went mere. B．It's not a very good one. C．There' s one in her home town. D．It will be closed when she's free.
【单选题】一斜齿圆柱齿轮传动，已知法向模数m n =5mm，齿数z 1 =21，z 2 =95，螺旋角β=13.521°，齿宽b 1 =90mm，b 2 =85mm，则该传动的齿宽系数φ d 等于______。
A.
0.787
B.
0.833
C.
0.174
D.
0.184
【简答题】听对话，补全句子。 M: Hello! May I 1 to Ann, please? W: I'm sorry. She is 2 at the moment. Can I take a message? M: Yes, please. Can you ask her to 3 me at 5:30 this evening? I have something to tell her. W: S...
【单选题】He didn’t go to France, for the doctor suggested that he ________ there.
A.
won ’ t go
B.
not go
C.
not to go
D.
didn ’ t go
【简答题】A．She has recently gone there. B．It's not a very good one. C．There's one in her home town. D．It will be closed when she's free.
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