起重用钢丝绳应每年试验一次,以()倍容许工作荷重进行10min的静力试验,不应有断裂和显著的局部处延伸现象。
A.4
B.3
C.2
D.1
参考答案:C
What a great weight Jane felt ________ off her mind the moment she heard she had passed the College Entrance Examination!
A.take
B.to take
C.taking
D.taken
动物在进行全身麻醉时不常出现的并发症是()
A.呕吐
B.舌回缩
C.呼吸停止
D.心搏停止
E.眼球凹陷