20-21高三下·全国·阶段练习
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1 . 一些二次曲面常常用于现代建筑的设计中,常用的二次曲面有球面、椭球面、单叶双曲面和双曲抛物面、比如,中心在原点的椭球面的方程为
,中国国家大剧院就用到了椭球面的形状(如图
),若某建筑准备采用半椭球面设计(如图
),半椭球面方程为
,该建筑设计图纸的比例(长度比)为
(单位:
),则该建筑的占地面积为( )
![](https://img.xkw.com/dksih/QBM/2021/3/1/2668376350171136/2668517765701632/STEM/63be8896-e84e-4fd8-a2cf-7967fe918d00.png)
![](https://img.xkw.com/dksih/QBM/2021/3/1/2668376350171136/2668517765701632/STEM/c03a6e62-d51f-4b14-b1bd-1c445878569d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca26bf39e99838472378b0ded44cc85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d710f4c229b99a54af1a1f1963a105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d55545dbf5b0671987d0c72b1413296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/2021/3/1/2668376350171136/2668517765701632/STEM/63be8896-e84e-4fd8-a2cf-7967fe918d00.png)
![](https://img.xkw.com/dksih/QBM/2021/3/1/2668376350171136/2668517765701632/STEM/c03a6e62-d51f-4b14-b1bd-1c445878569d.png)
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2021-03-01更新
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9卷引用:福建省名校联盟优质校2021届高三大联考数学试题