如图,某公路隧道的横截面积为抛物线形,其最大高度为6米
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![如图,某公路隧道的横截面积为抛物线形,其最大高度为6米](/uploads/image/z/3981419-35-9.jpg?t=%E5%A6%82%E5%9B%BE%2C%E6%9F%90%E5%85%AC%E8%B7%AF%E9%9A%A7%E9%81%93%E7%9A%84%E6%A8%AA%E6%88%AA%E9%9D%A2%E7%A7%AF%E4%B8%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%BD%A2%2C%E5%85%B6%E6%9C%80%E5%A4%A7%E9%AB%98%E5%BA%A6%E4%B8%BA6%E7%B1%B3)
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