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题目内容
（2024年国家开放大学答案）
<img alt="" height="51" src="/api/uploads/20000023475/in-rich-contentcreated_at=1648122558" width="575">(单选题)
.<img alt="" height="57" src="/api/uploads/20000023476/in-rich-contentcreated_at=1648122558" width="116">
.<img alt="" height="53" src="/api/uploads/20000023477/in-rich-contentcreated_at=1648122558" width="97">
.<img alt="" height="64" src="/api/uploads/20000023478/in-rich-contentcreated_at=1648122558" width="89">
.<img alt="" height="42" src="/api/uploads/20000023479/in-rich-contentcreated_at=1648122558" width="117">
.<img alt="" height="57" src="/api/uploads/20000023476/in-rich-contentcreated_at=1648122558" width="116">
.<img alt="" height="53" src="/api/uploads/20000023477/in-rich-contentcreated_at=1648122558" width="97">
.<img alt="" height="64" src="/api/uploads/20000023478/in-rich-contentcreated_at=1648122558" width="89">
.<img alt="" height="42" src="/api/uploads/20000023479/in-rich-contentcreated_at=1648122558" width="117">
参考答案
