【判断题】【消耗次数:1】
在n个结点的无向图中,若边数大于n-1,则该图必是连通图。
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错误
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相关题目
【判断题】 若一个图是连通的, 则边数m至少应为n-1。
①  正确
②  错误
【判断题】 设n阶无向连通图G有m条边,则mn-1。
①  正确
②  错误
【单选题】 设某有向图的邻接表中有n个表头结点和m个表结点,则该图中有()条有向边。
①  n
②  n-1
③  m
④  m-1
【单选题】 设无向图G中有n个顶点,则该无向图的最小生成树上有()条边。
①  n
②  n-1
③  2n
④  2n-1
【多选题】 设 G 是 n (n32)阶 n + 1 条边的无向简单连通图, 则以下哪些性质正确:
①  存在顶点 v, d(v)33;
②  所以顶点度数之和等于2(n + 1);
③  至少有两个顶点不是割点;
④  奇度顶点个数可以不是偶数个。
【单选题】 设无向图的顶点个数为n,则该图最多有( )条边。
①  n-1
②  n(n-1)/2
③  n(n+1)/2
④  n+1
【简答题】 设某有向图的邻接表中有n个表头结点和m个表结点,则该图中有[填空1]条有向边。
【单选题】 一个n个顶点的连通无向图,其边的个数至少为( )。
①  n-1
②  n
③  n+1
④  nlogn
【单选题】 设无向图G(n, m)是连通图,则m的取值范围是( )。
①  m ≤n-1
②  m≥n-1
③  n-1≤m≤n(n-1)/2
④  m≥n(n-1)/2
【单选题】 设 G 是 n (n32)阶 n + 1 条边的无向简单连通图, 则以下哪个性质正确:
①  存在顶点 v, d(v)32;
②  存在顶点 v, d(v)33;
③  存在顶点 v, d(v)34;
④  存在顶点 v, d(v)35。
随机题目
【单选题】 18.I’d rather you _____that now than afterwards.
①  know
②  knew
③  had known
④  have known
【单选题】 24.He might have been killed ____the timely arrival of the ambulance. 
①  but for
②  except for
③  besides
④  except
【单选题】 5.The driver coming in the opposite direction _______ to avoid the cow crossing the road.
①  turned
②  swerved
③  lunged
④  scrambled
【单选题】 8.They made a______ decision, which later led to the collapse of the economy.
①  lucky
②  . fateful
③  indebted
④  . good
【单选题】 2.At night, he _______ me all his secrets.
①  confided to
②  confided from
③  confided with
④  confided for
【单选题】 25. She put an extra blanket over the baby for fear that____.
①  he catches cold
②  he should catch cold
③  he caught cold
④  . he be catching cold
【单选题】 10. Luckily, the house ______ the storm.
①  lived
②  . survived by
③  survived
④  was survived by
【单选题】 1. The authors purpose of writing
①  To describe a planes jolt
②  To tell the readers a story about the lightning.
③  To narrate the authors personal experience during an accident.
【单选题】 12.Most _______residents tried to seek protection in the local hospitals.
①  paniced
②  panicked
③  panic
④  panicking
【单选题】 3.My grandma is ______ good health.
①  blessed with
②  blessed about
③  blessing with
④  blessing out