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若点M(x,y)的坐标满足关系式xy=0,则点M在( ) A.原点 B.x轴上 ...
若点M(x,y)的坐标满足关系式xy=0,则点M在( )
A.原点
B.x轴上
C.y轴上
D.x轴上或y轴上
考点分析:
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