分部(子分部)工程质量验收合格的规定是()。A.分部(子分部)工程所含工程的质量均应

So sudden  ____  thatthe enemy had no time to escape.   [      ]

A. did the attack    

B. the attack did    

C. was the attack    

D. the attack was

My brother is honest. He _____ such a thing.

A．might not do

B．can’t have done

C．can do

D．mustn’t have done

髂股静脉血栓形成后可发生的严重致命并发症为

A．下腔静脉阻塞

B．肺栓塞

C．下肢溃疡，感染致全身感染

D．下肢动脉闭塞，肢体缺血坏死

E．血栓性静脉炎

前交叉韧带损伤

A．与相应的椎骨平面相差2节
B．与相应的椎骨平面相差1节
C．与相应的椎骨平面相差3节
D．胸椎10～12之间
E．胸椎12到腰1之间

牙轮钻进