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已知抛物线,图象与y轴交点的坐标是( )
A.(0,3) B.(0,-3) C.(0,) D.(0, -)
已知抛物线,图象与y轴交点的坐标是( )[来源:Z&xx&k.Com]
A.(0,3) B.(0,-3) C.(0,) D.(0,-)