题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044326-23370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044326-46336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-71702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-82742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-55845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044326-23370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-82742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-81328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044328-20660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044328-30659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044328-30659.png)
A.1 | B.2 | C.3 | D.4 |
答案
解析
圆心(2,-1)到直线x-3y+2=0的距离d=
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-81328.png)
直线和圆相交,过圆心和l平行的直线和圆的2个交点符合要求
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-81328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044327-81328.png)
故选B
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044319-70231.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044319-68540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044319-97554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044320-20257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044310-88791.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044310-11796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044310-34489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044310-82570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044311-32741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044311-17904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044300-93296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044300-41727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044241-64346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044241-56719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044241-49486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044242-63743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044242-68063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044242-13763.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044242-68063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044241-64346.png)
曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-99415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-89683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-90432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-55519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-31216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044233-69521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044233-87416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108044232-90432.png)
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