“微信扫一扫”进入题库练习及模拟考试
若圆C与圆
A.\({\left( {x - 2} \right)^2} + {\left( {y + 1} \right)^2} = 1\)
B.\({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} = 1\)
C.\({\left( {x - 1} \right)^2} + {\left( {y + 2} \right)^2} = 1\)
D.\({\left( {x + 1} \right)^2} + {\left( {y - 2} \right)^2} = 1\)
参考答案:A