In the activity-on-arrow network, there are essential differences between positive activity and dummy activity.

双代号网络图中，虚工作和实工作有着本质的区别，其主要作用是传递工作之间的逻辑关系。

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In the activity-on-arrow network, there are essential differences between positive activity and dummy activity. The main function of dummy activity is to transfer the logical relationship in the work.

在双代号网络图中，虚工作和实工作有着本质的区别，其主要作用是传递工作之间的逻辑关系。

youdao

In the activity-on-arrow network, there are essential differences between positive activity and dummy activity. The main function of dummy activity is to transfer the logical relationship in the work.

在双代号网络图中，虚工作和实工作有着本质的区别，其主要作用是传递工作之间的逻辑关系。

youdao