首页/ 题库 / [单选题]"当()时,正项级数

"当()时,正项级数收敛。"

单选题
2021-07-17 18:29
A、级数<img id=\""ODepqftTEMP20180523105951067.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODepqftTEMP20180523105951067.png?Expires=1842404391&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=OcYYiRy4qtsVPrEyZrvRuAqhIbU%3D\"" \/>收敛
B、<img id=\""ODjxyjfTEMP20180523105951216.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODjxyjfTEMP20180523105951216.png?Expires=1842404391&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=GFweNLrMJHhLJYgclBok2HBDa90%3D\"" \/>
C、<img id=\""ODdcxuzTEMP20180523105951551.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODdcxuzTEMP20180523105951551.png?Expires=1842404392&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=mTauNbkf6491Gk0RhOfGjrLA6ZU%3D\"" \/>且<img id=\""ODjelxqTEMP20180523105951872.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODjelxqTEMP20180523105951872.png?Expires=1842404392&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=VZ3OAI1281feYVeeMPb%2BTKaD\/N4%3D\"" \/>
D、级数<img id=\""ODiookxTEMP20180523105952545.png\"" src=\""http:\/\/ccm2cdn.open.com.cn\/zyglpt\/OD\/TEMP\/2018\/0523\/ODiookxTEMP20180523105952545.png?Expires=1842404392&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=7kCmJ\/jN8MdtFycNeRlNmqDvweg%3D\"" \/>收敛
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