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【单选题】
[单选题]车床主要振动是切削时自激振动,最易引起颤振的工作是()。A.
半精
B.
精
C.
切断
D.
精
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反馈参考答案：
举一反三
【简答题】连续刺激肌肉，每后一次刺激落在前一次收缩的舒张期内引起的复合收缩称为 108．短时间一连串最大刺激作用于肌肉，若相继两次刺激间的时距小于绝对不应期时，第二个刺激引起的变化是 A．无肌肉收缩 B．一次单收缩 C．一连串单收缩 D．不完全强直收缩 E．完全强直收缩
【单选题】He ___ when we came
A.
will arrive
B.
had already arrived
C.
would alreay arrive
D.
has already arrived
【单选题】When we arrived, we found the meeting room crowded with _______ students.
A.
quite a few
B.
only a few
C.
few
D.
a few quite
【单选题】When we arrived in the deep night, we found there was no food _______ as all the shops were shut.
A.
left
B.
available
C.
remaining
D.
convenient
【单选题】When we reached the station, the train had not arrived yet so we______.
A.
needed not to hurry
B.
needn't have hurried
C.
didn't need to hurry
D.
had not needed to hurry
【简答题】When we arrived, there was a smell of cooking (come) ______from the kitchen.
【简答题】When we arrived at the station, it was said that the train would be late for ten minutes, so we _____. A) needed not to hurry B) needn't have hurried C) didn't need hurry D) hadn't needed to hurry
【单选题】It was ________ that we felt tired when we arrived.
A.
a so long travel
B.
such a long travel
C.
such a long journey
D.
such a so long journey
【简答题】.When we reached the station, the train had still not arrived; so we ______. a. needed not to hurry b. needn’t have hurried c. need not to have hurried d. didn’t need to hurry
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