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单项选择题
设<em style=.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;.>A</em>，<em style=.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;.>B</em>是两事件，则下列等式中（）是不正确的．
(analysis)
.<img alt="Image" class="" data-id="21095" height="32" src="http://lms.ouchn.cn:80/api/uploads/21095/in-rich-contentcreated_at=2021-04-25T07:26:07Z" width="184">，其中<em style=\.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;\.>A</em>，<em style=\.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;\.>B</em>相互独立
.<img alt="Image" class="" data-id="21096" height="33" src="http://lms.ouchn.cn:80/api/uploads/21096/in-rich-contentcreated_at=2021-04-25T07:26:23Z" width="169">，其中<img alt="Image" class="" data-id="21097" height="34" src="http://lms.ouchn.cn:80/api/uploads/21097/in-rich-contentcreated_at=2021-04-25T07:26:37Z" width="91">
.<img alt="Image" class="" data-id="21098" height="31" src="http://lms.ouchn.cn:80/api/uploads/21098/in-rich-contentcreated_at=2021-04-25T07:27:00Z" width="158">，其中<em style=\.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;\.>A</em>，<em style=\.color: rgb(33, 37, 41); font-family: -apple-system, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji"; font-size: 16px;\.>B</em>互不相容
.<img alt="Image" class="" data-id="21099" height="36" src="http://lms.ouchn.cn:80/api/uploads/21099/in-rich-contentcreated_at=2021-04-25T07:27:23Z" width="324">

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出自：2024年国家开放大学答案

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