题目内容

A.条件(1)充分,但条件(2)不充分.B.条件(2)充分,但条件(1)不充分.C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.D.条件(1)充分,条件(2)也充分.E.条件(1)和(2)单独都不充分,条件(1)和条件(2)联合起来也不充分. 直线ax+by=3和圆x2+y2=3没有交点. (1)点P(a,b)在圆x2+y2=3的外面; (2)点P(a,b)在圆x2+y2=3上.

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