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当<img align="middle" alt="" src="/api/uploads/1529072/in-rich-contentcreated_at=1647290077">时，下列变量为无穷小量的是（ ）.(单选题)
.<img align="\"middle\"" alt="\"\"" src="\"/api/uploads/1529074/in-rich-contentcreated_at=1647290077\"">.,.
<img align="\"middle\"" alt="\"\"" src="\"/api/uploads/1529073/in-rich-contentcreated_at=1647290077\"">.,.
<img align="\"middle\"" alt="\"\"" src="\"/api/uploads/1529075/in-rich-contentcreated_at=1647290077\"">.,.
<img align="\"middle\"" alt="\"\"" src="\"/api/uploads/1529076/in-rich-contentcreated_at=1647290077\"">

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出自：2024年国家开放大学答案

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