【判断题】【消耗次数:1】
图G的邻接矩阵A,A<sup>l</sup>中的i行j列表示结点v<sub>i</sub>到v<sub>j</sub>长度为l路的数目。
正确
错误
参考答案:
复制
纠错
相关题目
【单选题】 &lt;p&gt;下列选项中,属于企业的无形资源的是()。&lt;/p&gt;
①  A.人力
②  B.设备
③  C.原材料
④  D.信誉
【单选题】 集合A={a,b,c},A上的二元关系R={<a,a>&lt;A,A&gt;,&lt;B,B&gt;,&lt;A,C&gt;<b,b><a,c>},则R具有以下性质()。</a,c></b,b></a,a>
①  自反性、反对称性、传递性
②  反自反性、反对称性、传递性
③  对称性、传递性
④  反对称性、传递性
【多选题】 &lt;p&gt;完善和落实民主集中制的各项制度,坚持( )和( )相结合,既充分发扬民主,又善于集中统一。&lt;/p&gt;
①  A.民主基础上的集中
②  B.集中指导下的民主
③  C.集中基础上的民主
④  D.民主指导下的集中
【单选题】 设G=&lt;V,E&gt;有n个结点,m条边,则要确定G的一棵生成树必须删去G中边数为()
①  m-n+1
②  n-m-1
③  m-n-1
④  n-m+1
【单选题】 Q为有理数集,Q上定义运算*为a*b=a+b-ab,则&lt;Q,*&gt;的幺元为()
①  a
②  b
③  1
④  0
【单选题】 相间短路的阻抗继电器采用0°接线。例如I<sub>J</sub>=I<sub>B</sub>-I<sub>A</sub>时,U<sub>J</sub>=()。
①  U<sub>B</sub>
②  U<sub>B</sub>-U<sub>A</sub>
③  U<sub>A</sub>-U<sub>B</sub>
④  U<sub>A</sub>
【单选题】 在《&lt;共产党人&gt;发刊词》一文中毛泽东提出()是一个伟大工程的观点。
①  A. 人民民主专政
②  B.党的建设
③  C.民主集中制
④  D.群众路线
【单选题】 C(B|A) 表示在规则A-&gt;B中,证据A为真的作用下结论B为真的( )
①  可信度
②  信度
③  信任增长度
④  概率
【判断题】 低压灌溉管道系统是指压力P&lt;300kPa。
①  正确
②  错误
【简答题】 下列程序段的运行结果是[填空] 。 Private Sub Form_Click() Dim a(3) As Long a(0) = 1: a(1) = 2: a(2) = 3: a(3) = 4 j = 1 For i = 3 To 0 Step -1 s = s + a(i) * j j = j * 10 Next i Print s End Sub
随机题目
【单选题】 15. She had ____ to do, so she was free.
①  something
②  anything
③  everything
④  nothing
【单选题】 Could you ____ me a favor by shutting the door?
①  do
②  help
③  get
④  give
【单选题】 The students were all entertained in a Mexican restaurant, at Professor Brians ____.
①  money
②  pay
③  expense
④  loss
【单选题】 17. A survey was carried out on the death rate of new-born babies in that region, ____were surprising.
①  as results
②  which results
③  the results of it
④  the results of which
【单选题】 Every morning Mr. Smith takes a ____walk to his office.
①  20 minute
②  20 minutes
③  20-minutes
④  20-minute
【单选题】 20. She never sang, ____ dance.
①  or she ever did
②  or did she ever
③  nor did she ever
④  nor she ever did
【单选题】 He was ____ in his work and didn’t hear me come in.
①  critical
②  logical
③  typical
④  absorbed
【单选题】 In English some surnames ____ occupations or people. ?
①  deserve ?
②  desire ?
③  design ?
④  describe?
【单选题】 18. At thirty-three he ____ the chance of a new start in computer business.
①  declared
②  lifted
③  spared
④  seized
【单选题】 Peter: It’s such a nice warm day. I think I’ll go out for a walk. Dave: ____
①  It is warm to take a walk.
②  Yes. It is warm today.
③  I’d like to join you.
④  Yes. Everybody likes this weather.