下列不属于“神舟”五号特点的是（）。
A、起点高
B、速度快
C、容量大
D、技术难度大
参考答案：B
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%．
在室外敷设过程中，要将接地干线末端露出地面，以便续接接地线，其高度不宜超过（）mm。
A.200
B.300
C.400
D.500
