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1 . 小李在如图所示的跑道(其中左、右两边分别是两个半圆)上匀速跑步,他从点
处出发,沿箭头方向经过点
、
、
返回到点
,共用时
秒,他的同桌小陈在固定点
位置观察小李跑步的过程,设小李跑步的时间为
(单位:秒),他与同桌小陈间的距离为
(单位:米),若
,则
的图象大致为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f959e5f8d89390f0f136f6acc9f6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4dafff83fd807d0010d1805d9f4552e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709ca478fb15ea08e8aa55328eae8e6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-09-19更新
|
485次组卷
|
4卷引用:湖南省衡阳市第八中学2023-2024学年高三上学期第一次阶段性测试数学试题
湖南省衡阳市第八中学2023-2024学年高三上学期第一次阶段性测试数学试题海南省琼海市嘉积中学2023届高三三模数学试题(已下线)热点2-3 函数的图象及零点问题(8题型+满分技巧+限时检测)(已下线)第06讲 函数的图象(九大题型)(练习)-1
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2 . 由四个三角形围成的多面体称为四面体,对棱相等的四面体称为等腰四面体.已知如图等腰四面体
中,
分别是棱
的中点.下面结论中,正确的有( )
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735140570505216/2737932602081280/STEM/8b78dece-e8cc-49e2-89ae-07af16fa75ed.png?resizew=226)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c52a2c840ba1755a2e3b4c09901af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a337a934b801730321f67b0e5a0b144f.png)
![](https://img.xkw.com/dksih/QBM/2021/6/3/2735140570505216/2737932602081280/STEM/8b78dece-e8cc-49e2-89ae-07af16fa75ed.png?resizew=226)
A.直线![]() |
B.![]() |
C.过直线![]() |
D.特别地,当四面体棱长全相等时,共顶点![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次