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下列级数收敛的是 ( )

单选题
2021-09-06 19:40
A、<img width="107" height="46" alt="" src="https://wendingoss.oss-cn-shenzhen.aliyuncs.com/test/190522/2019052218013894686.png" style="" />
B、<img width="62" height="46" alt="" src="https://wendingoss.oss-cn-shenzhen.aliyuncs.com/test/190522/2019052218013867199.png" style="" />
C、<img width="63" height="46" alt="" src="https://wendingoss.oss-cn-shenzhen.aliyuncs.com/test/190522/2019052218013851526.png" style="" />
D、<img width="86" height="48" alt="" src="https://wendingoss.oss-cn-shenzhen.aliyuncs.com/test/190522/2019052218013854726.png" style="" />
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正确答案
A

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