• 2022-06-30
    设A、B为两个随机事件,且[img=52x20]18032d25e6987e7.png[/img],则下列式子正确的是( )
    A: [img=271x65]18032d25f05a1d2.png[/img]
    B: [img=231x69]18032d25fa70f28.png[/img]
    C: [img=249x66]18032d260478530.png[/img]
    D: [img=374x56]18032d260fd372f.png[/img]
  • 举一反三