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已知圆C:x2+y2-4x=0,l过点P(3,0)的直线,则l与C的位置关系是 ...
已知圆C:x2+y2-4x=0,l过点P(3,0)的直线,则l与C的位置关系是 (填“相交”、“相切”、“相离”或“三种位置关系均有可能”).
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