1 . 第24届冬奥会将于2022年在中国北京举办,单板滑雪的U型场地近似为圆柱体的一部分(如图),现一名运动员从顶端A点滑行到另一顶端B点,则滑行的最短距离约为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/a09d66b0-1b21-4238-8020-6b64881a0ee4.png?resizew=230)
(注:
,
)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/a09d66b0-1b21-4238-8020-6b64881a0ee4.png?resizew=230)
(注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45317caa63567d6862f40f106247daa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e517611970f373a84c470b7365bdb42f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 某圆柱的高为1,底面周长为8,其三视图如图所示
圆柱表面上的点M在正视图上的对应点为A,圆柱表面上的点N在左视图上的对应点为B,则在此圆柱侧面上,从M到N的路径中,最短路径的长度为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/84aadcab-9c5d-451d-a70d-6f795784ba76.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/84aadcab-9c5d-451d-a70d-6f795784ba76.png?resizew=162)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次