雨雾天气条件下，当班收费员要打开（），并提醒司机减速慢行。
A.顶棚灯
B.亭内灯
C.车灯
D.雾灯
参考答案：D
( )is a method used in Critical Path Methodology for construcing a project achedule network diagram that uses hoxes or rectangles, referred to as nodes, to represe activities and connects them with arrows that show the logical relationships that exist between them.
A．PERT
B．AOA
C．WBS
D．PDM
行车外勤人员可以穿带大帽钉子的鞋吗？
