题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-58630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-32584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-27643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134523-70706.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134523-62569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134523-62830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-32584.png)
A.圆 | B.椭圆 | C.抛物线 | D.双曲线 |
答案
解析
试题分析:不妨设
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134523-55056.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-27643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-72404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-27643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-23072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-73158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-42310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-63395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134525-51139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134525-22035.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134523-62569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134525-58495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134525-35674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-95148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-93313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-98479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-11090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-59124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-72404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134527-87044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134527-20971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134526-59124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-23072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134527-70575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134527-71699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-72404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134528-42222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134528-47919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134524-72404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134522-32584.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134513-38910.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134513-54754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134514-18483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134513-54754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134514-53859.png)
A.10 | B.6 | C.12 | D.14 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134506-49530.png)
A.![]() | B.![]() | C.±![]() | D.±![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134449-50419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134450-38150.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134441-37639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134441-58730.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134435-75905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134435-76229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023134435-26859.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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