交接双方必须按规定时间在工作现场进行交接。罐笼等提升容器在运行中，一律不准进行交接班，须待罐笼到位停稳，并打定点信号后才准交接。
参考答案：对
侵蚀性葡萄胎一般发生在葡萄胎清除术后（）
A.3个月
B.6个月
C.10个月
D.12个月
E.18个月
_____ children there are in a family, _____ their life will be. [ ]
A. The less, the better
B. The fewer, the better
C. Fewer, richer
D. More, poorer
