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已知集合,则 ( ) A. B. C. D.

 已知集合6ec8aac122bd4f6e6ec8aac122bd4f6e,则6ec8aac122bd4f6e            (    )

A.6ec8aac122bd4f6e                     B. 6ec8aac122bd4f6e

C.6ec8aac122bd4f6e                       D.6ec8aac122bd4f6e

 

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C. 6ec8aac122bd4f6e                             D. 6ec8aac122bd4f6e

 

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 下列四组函数中,表示同一个函数的是                                   (    )

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