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设函数的定义域是A,函数的定义域是B,若,则正数的取值范围是 ( ) A. B....

设函数6ec8aac122bd4f6e的定义域是A,函数6ec8aac122bd4f6e的定义域是B,若6ec8aac122bd4f6e,则正数6ec8aac122bd4f6e的取值范围是                                                                                        (    )

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

 

B 【解析】略
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