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+C=0和圆(x-2)2+(y+3)2=5相切． (1)A=1，B=2，C=-1； (2)A=2，B=1，C=3．
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