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等比数列中,,且,则 ( ) A. 16 B.27 C. 36 D. 54

等比数列6ec8aac122bd4f6e中,6ec8aac122bd4f6e,且6ec8aac122bd4f6e,则6ec8aac122bd4f6e                (    )

A. 16            B.27               C. 36          D. 54

 

D 【解析】略
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