1 . 如图,已知
,圆心在
上,半径为
的圆
在
时与
相切于点
,圆
沿
以
的速度匀速向上移动,圆被直线
所截上方圆弧长记为
,令
,则
与时间
(
≤
≤
,单位:
)的函数
的图像大致为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/c4e7ce8d-f6e4-4d0d-bf1e-6169e7bd552b.png?resizew=113)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef959a420dc4a40d40e1960a68d1acce.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9343cc3b7ec062890fec63077d681865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c65d71e57e6e7697e2f627dcd58583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9b65c51e37f40211b876be02105701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/c4e7ce8d-f6e4-4d0d-bf1e-6169e7bd552b.png?resizew=113)
A.![]() | B.![]() | C.![]() | D.![]() |
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