问题
单项选择题
关于关键线路和关键工作叙述不正确的有（）。
A．在网络计划中，总时差最小的作为关键工作
B．从起点节点到终点节点的通路中，各项工作持续时间总和最大的是关键线路
C．关键线路上可能有虚工作存在
D．开始节点和完成节点均是关键节点的工作一定是关键工作
答案
参考答案：D
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关于关键线路和关键工作叙述不正确的有（）。
A．在网络计划中，总时差最小的作为关键工作
B．从起点节点到终点节点的通路中，各项工作持续时间总和最大的是关键线路
C．关键线路上可能有虚工作存在
D．开始节点和完成节点均是关键节点的工作一定是关键工作
参考答案：D
| 完形填空。 | |||
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