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已知等比数列满足,当时,( ) A. B. C. D.

已知等比数列6ec8aac122bd4f6e满足6ec8aac122bd4f6e,当6ec8aac122bd4f6e时,6ec8aac122bd4f6e(    )

A.6ec8aac122bd4f6e         B.6ec8aac122bd4f6e            C.6ec8aac122bd4f6e                           D.6ec8aac122bd4f6e

 

C 【解析】略
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