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【单选题】
卷钢一件，重23t，长6700mm ，直径3100mm，采用N6一车负重装载，均匀顺向卧装，货物下面垫凹口深为12mm，凹部100mm的凹木，两凹木中心线间距与车辆转向架中心销间距相等，凹木上钉140mm的掩木，若已知纵向惯性力为660.230，横向惯性力为123.640KN ,风力为5.090KN, 则该货物采取加固措施后η横滚的值是（）。A.
0.64
B.
0.84
C.
1.04
D.
1.25
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【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 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 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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