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A.f(x-3，y)=0                         B.f(y+3，x)=0

C.f(y-3，x+3)=0                     D.f(y+3，x-3)=0

A.關(guān)于直線y=x對(duì)稱                      B.關(guān)于原點(diǎn)對(duì)稱

C.關(guān)于x軸對(duì)稱                             D.關(guān)于y軸對(duì)稱

曲線f(x,y)=0關(guān)于直線x－y－2=0對(duì)稱的曲線方程是

A.f(y+2,x)=0                                                   B.f(x－2,y)=0

C.f(y+2,x－2)=0                                              D.f(y－2,x+2)=0