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已知直线与曲线相切,则a的值为 ( ) A.1 B.2 C.-3 D.-2

已知直线6ec8aac122bd4f6e与曲线6ec8aac122bd4f6e相切,则a的值为                           (    )

A.1                                  B.2                            C.-3                          D.-2

 

C 【解析】略
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