【单选题】【消耗次数:1】
具有4个结点的非同构的无向树的数目是(   )
2
3
4
5
参考答案:
复制
纠错
相关题目
【判断题】 下列正整数列中, (2, 2, 3, 3, 4, 4, 5)可以当成无向图的顶点度序列。
①  正确
②  错误
【单选题】 设无向树 T 有 8 片树叶, 2 个 3 度分支点, 其余的分支点都是 4 度顶点, 问 T 有几个 4 度分支点:
①  1;
②  2;
③  3;
④  4。
【判断题】 深度为5的完全二叉树第5层上有4个结点,该树一共有28个结点。
①  正确
②  错误
【单选题】 一棵完全二叉树共有4层,且第4层上有2个结点,该树共有( )个非叶子结点(根为第一层)。
①  A.5
②  B.4
③  C.3
④  D.9
【单选题】 有20个工人看管机器台数资料如下:2、5、4、4、3、4、3、4、4、2、2、4、3、4、6、3、4、5、2、4,如按以上资料编制分配数列应采用
①  单项式分组
②  等距分组
③  不等距分组
④  以上几种分组均可以
【判断题】 具有12个结点的完全二叉树有5个度为2的结点。
①  正确
②  错误
【单选题】 这条旋律 “3 4 | 5 6 2 3 | 4 - 1 2 | 3 3 2 2 | 2 1 ||”的节拍为( )
①  2/4
②  3/4
③  4/4
【单选题】 设n (n 3 2)阶无向树,下面说法正确的是:
①  是欧拉图;
②  是哈密顿图;
③  是二部图;
④  是自对偶图。
【单选题】 设树T的度为4,其中度为1,2,3和4的结点个数分别为4,2,1,1,则T中的叶子数为( )。
①  5
②  6
③  7
④  8
【单选题】 设无向树 T 有2 个 2 度分支点, 3 个 3 度分支点, 其余的都是 叶子, 问 T 有多少片叶子:
①  4;
②  5;
③  6;
④  7。
随机题目
【单选题】 Modern machinery _______ been installed in this newly-built factory.
①  has
②  have
③  is
④  are
【单选题】 After failing the exams three times, Jack realized that he’d never ____in English.
①  see to it
②  attain it
③  catch it
④  make it
【单选题】 Before the final examination, some students have shown _______ of tension. They even have trouble in sleeping.
①  anxiety
②  marks
③  remarks
④  signs
【单选题】 Wow! This is a marvelous room! I’ve never known you’re so artistic._________
①  Great, I am very art-conscious.
②  Don’t mention it.
③  Thanks for your compliments.
④  It’s fine.
【单选题】 Sorry, I can’t find the books you asked for.____________
①  Don’t mention it.
②  It’s your fault.
③  Thanks anyway.
④  I won’t forgive you.
【单选题】 The atmosphere _______ certain gases mixed together in definite proportions.
①  composes of
②  is made up
③  consists of
④  makes up of
【单选题】 Do you mind my smoking here?___________
①  No, thanks.
②  Yes, I do.
③  Yes, I’d rather not.
④  Good idea.
【单选题】 Every time when I go back to my hometown, I usually spend two days ____ of my relatives.
①  going the rounds of
②  rounding up
③  making the rounds of
④  rounding on
【单选题】 he children  ()  many times not to play with fire.
①  told
②  have told
③  have been told
④  are being told
【单选题】 _______ girl dressed _______ black is her sister Rose.
①  A; in
②  A; on
③  The; on
④  The; in