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【单选题】
目前圆纬机最为常见的传动形式是___( )___A.
针筒与牵拉卷取机构同步回转,其余机件不动。
B.
针筒和牵拉机构不动,三角座、导纱器和筒子架同步回转。
C.
针筒回转,其余机件不动。
D.
针筒和牵拉机构、三角座、导纱器和筒子架均同步回转。
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【单选题】Captain Smith didn't inform. his officers of the tree situation because he didn't want to cause a panic.
A.
Y
B.
N
C.
NG
【单选题】— Are you satisfied with what the captain explained? — Not at all. It couldn't have been _____. [ ]
A.
so bad
B.
the worst
C.
the best
D.
worse
【简答题】______ the determined captain , all the passengers on board wouldn ' t have been saved. [ A]It had not been for [ B ] Had it not been for [ C]lf it had not for [ D] Not had been for
【单选题】At first the captain didn't worry because the ship was said to be _______.
A.
unsinkable
B.
perfect
C.
unprepared
D.
unusually
【单选题】______ the determined captain, all the passengers on board wouldn't have been saved.
A.
It had not been for
B.
Had it not been for
C.
If it had not for
D.
Not had been for
【单选题】共析转变和共晶转变的根本区别是________。
A.
共析转变前的母相是液相,而共晶转变前的母相是固相
B.
共析转变前的母相是固相,而共晶转变前的母相是液相
C.
共晶转变后的产物是固相,而共析转变后的产物是液相
D.
共析转变后的产物是固相,而共晶转变后的产物是液相
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