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图示对称结构<em>EI = </em>常数，对称轴穿过的截面<em>C</em>内力应满足（　　）
<img alt="" src="/api/uploads/2080944/in-rich-contentcreated_at=1649150598">(单选题)
.<img alt="" src="/api/uploads/2080945/in-rich-contentcreated_at=1649150598">
.<img alt="" src="/api/uploads/2080946/in-rich-contentcreated_at=1649150598">
.<img alt="" src="/api/uploads/2080947/in-rich-contentcreated_at=1649150598">
.<img alt="" src="/api/uploads/2080948/in-rich-contentcreated_at=1649150598">

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出自：2024年国家开放大学答案

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