物品乱摆放属于5S中的哪一项要处理的范围？
参考答案：
整顿要处理的范围。
You are working on a software development project and there is 60% probability that development will be completed by the planned date and 70% probability that testing will be completed by the planned date．What is the probability that development and testing will be completed as per schedule ？（）
A．65%．
B．42%．
C．66%．
D．63%．
GIS检修中，进入GIS室内通风时间不得小于（）．
A.15分钟
B.20分钟
C.25分钟
D.30分钟
