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已知y=f(x-1)是偶函数,则函数f(x)图象的对称轴是( ) A.x=1 B...
已知y=f(x-1)是偶函数,则函数f(x)图象的对称轴是( )
A.x=1
B.x=-1
C.x=0.5
D.x=-0.5
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