解题方法
1 . 如图,棱长为2的正方体
中,
为
的中点,动点
在平面
内的轨迹为曲线
.下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/2023/11/14/3367677401415681/3368733723852800/STEM/38c19b8810cd4edb9a8b46a9226f14d2.png?resizew=215)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://img.xkw.com/dksih/QBM/2023/11/14/3367677401415681/3368733723852800/STEM/38c19b8810cd4edb9a8b46a9226f14d2.png?resizew=215)
A.当![]() ![]() |
B.当动点![]() ![]() ![]() ![]() ![]() |
C.当直线![]() ![]() ![]() ![]() |
D.当直线![]() ![]() ![]() ![]() |
您最近一年使用:0次
2 . 如图,已知正方体
棱长为4,Q是
上一动点,点H在棱
上,且
,在侧面
内作边长为1的正方形
,P是侧面
内一动点,且点P到平面
距离等于线段
的长,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538139930624/STEM/7869cd131d4946b6aa908773d46fcf82.png?resizew=205)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c2d079eac9f55a85dd4079abfe9afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0058da08e2f68829aa0551357075e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958536665874432/2961538139930624/STEM/7869cd131d4946b6aa908773d46fcf82.png?resizew=205)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() |
D.当点P运动时,![]() ![]() |
您最近一年使用:0次
2022-04-19更新
|
791次组卷
|
3卷引用:广东省揭阳市普宁国贤学校2023届高三下学期模拟数学试题