答案查看网，轻松搜题/搜资源
登录
搜题/搜资源
【单选题】【消耗次数：1】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则对称差关系A⊕B等于：
① {1,21,32,43,34,2
② {2,4
③ {1,21,33,34,2
④ {1,23,3}.
参考答案：
复制
纠错
相关题目
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则差关系A-B等于：
①  {1,21,32,43,34,2
②  {2,4
③  {1,21,33,34,2
④  {1,23,3}.
查看完整题目与答案
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则交关系A∩B等于：
①  {1,21,32,43,34,2
②  {2,4
③  {1,21,33,34,2
④  {1,23,3}.
查看完整题目与答案
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则并关系A∪B等于：
①  {1,21,32,43,34,2
②  {2,4
③  {1,21,33,34,2
④  {1,23,3}.
查看完整题目与答案
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则差关系A-B的域fld(A-B)等于：
①  {1,3};
②  {1,2,4};
③  {1,2,3};
④  {2,3}.
查看完整题目与答案
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则交关系A∩B的值域ran(A∩B)等于：
①  {1,2};
②  {2,4};
③  {2};
④  {4}.
查看完整题目与答案
【单选题】 设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则并关系A∪B的定义域dom(A∪B)等于：
①  {1,2,3};
②  {1,2,3,4};
③  {2,3,4};
④  {3,4,2}.
查看完整题目与答案
【简答题】 设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则对称差关系A⊕B等于：[填空1]
查看完整题目与答案
【简答题】 设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则交关系A∩B等于：[填空1]
查看完整题目与答案
【简答题】 设 A = {1, 2=,2, 4=,3, 3=}，B = {1, 3=,2, 4=,4, 2=}，则交关系A∩B的值域ran(A∩B)等于：[填空1]
查看完整题目与答案
【判断题】 {2,22,32,43,33,44,4}是集合 A={2, 3, 4}上的小于等于关系。
①  正确
②  错误
查看完整题目与答案
随机题目
【单选题】 The ____ of beer and alcohol in New Zealand is very high.
①  consumption
②  use
③  drink
④  absorption
查看完整题目与答案
【单选题】 The woman murdered her friend and ______ to ______.
①  was sentenced , death
②  sentencing , die
③  sentenced , death
④  sentenced , die
查看完整题目与答案
【单选题】 _____ that we couldn’ t catch up with him.
①  So fast he ran
②  So fast did he run
③  So fast ran he
④  Such fast did he run
查看完整题目与答案
【单选题】 Their happiness was very ____.
①  crisp
②  brittle
③  delicate
④  fragile
查看完整题目与答案
【单选题】 I am ____ grateful for the many kindnesses you have shown my son.
①  excessively
②  much
③  certainly
④  exceedingly
查看完整题目与答案
【单选题】 His answer was so confused that I could hardly make any ____ of it at all.
①  explanation
②  meaning
③  sense
④  interpretation
查看完整题目与答案
【单选题】 Every summer they____ the neighbours at an outdoor party.
①  treat
②  invite
③  devote
④  entertaining
查看完整题目与答案
【单选题】 Advertising media like direct mail, radio, television and newspapers ____ to increase the sales of industrial products.
①  have been used
②  will be used
③  is being used
④  has been used
查看完整题目与答案
【单选题】 Miss Green was ____ $100 for driving after drinking.
①  fined
②  charged
③  punished
④  posed
查看完整题目与答案
【单选题】 Following are comments about the behavior that people in Korea usually expect in various social ____.
①  occasions
②  cases
③  situations
④  circumstances
查看完整题目与答案