• 2022-06-19
    设I为整数集合。选出下列是I上的二元运算的二元关系
    A: [img=348x25]18037980477b3e1.png[/img]
    B: [img=286x25]1803798052764ff.png[/img]
    C: [img=318x25]180379805d42ca0.png[/img]
    D: [img=294x25]18037980697d638.png[/img]
    E: [img=282x25]180379807468103.png[/img]
    F: [img=371x25]180379807f471d5.png[/img]
    G: [img=383x25]180379808a6fa49.png[/img]
    H: [img=368x25]180379809544622.png[/img]
    I: [img=279x25]18037980a029e86.png[/img]
  • 举一反三