如图是抛物线形拱桥的剖面图,拱底宽12m,拱高8m,设计警戒水位为6m,当拱桥内水位达到警戒水位时,拱桥内的水面宽度是________________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/10/458bef16-2171-46fc-8e6a-8f62cf99aa41.png?resizew=204)
更新时间:2021-11-14 21:32:08
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【知识点】 拱桥问题(实际问题与二次函数)解读
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【推荐1】如图是某地一座抛物线形拱桥,桥拱在竖直平面内与水平桥面相交于A,B两点,桥拱最高点C到
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【推荐2】如图是一个横断面为抛物线形状的拱桥,当水面宽
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