第七章测试1.In the Gantt charts, the horizontal axis represents time and the vertical axis represents each activity. （ ）
A:错 B:对
答案:B
2.The critical activity in critical path is ( ).
A:the end activity
B:the longest duration activity
C:the earliest beginning activity
D:the most important activity
3.
Please indicate the critical path in the following network(every number below the activity represents its duration). ( )A:A→B→E→G
B:A→C→F→G
C:A→B→D→F→G
4.A virtual activity is used in an AOA network to show an actual passage of time, not just the precedence relationship. ( ）
A:错 B:对 5.When we carry on the calculation steps for the lowest cost schedule in networks, no matter how we shorten the duration of activities, the critical path won’t change. ( ）
A:错 B:对
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