题目内容

下列命题中一定为真的是

A. 若无向图G为极大平面图，则G的对偶图G也是极大平面图
B. G为非无向连通图当且仅当G的边连通度λ(G)=0
C. 若能将无向图G的所有顶点排在G的同一个初级回路上，则G为哈密顿图
D. 若G为n阶m条边r个面的平面图，则n-m+r=2

查看答案

搜索结果不匹配？点我反馈

更多问题

Task 1
Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, and D. You should make the correct choice.
Why does a commuter (持火车月票的乘客) always look as if he has just been through a war？ Here is a story of a commuter.
Mr. Green gets up very early every day and eats a quick breakfast. Then he makes his wife drive him to the station. He arrives on time, b
If Mr. Green had got up several minutes later, he ______.

A. would have missed the train
B. might still have been able to catch the train
C. wouldn't be sad
D. would have been away from a war

会计科目是设置账户的基础和依据，是账户的名称。 ()

A. 正确
B. 错误

人民币壹佰元叁角整的小写金额是￥100.3。 ()

A. 正确
B. 错误

不涉及现金和银行存款收支的业务，应当填制转账凭证。 ()

A. 正确
B. 错误