单选题:网络图节点的编号顺序应(  )。

题目内容:
网络图节点的编号顺序应(  )。 A.从大到小,可不连续和重复
B.从小到大,不可连续,也不允许重复
C.从小到大,可不连续,但不允许重复
D.从大到小,需连续,但不允许重复

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答案解析:

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