如图,是一抛物线形拱桥,拱桥o离水面高4米,水面宽度AB=10米,水面宽度AB =10米,现有一竹排运送一只货箱从桥下经过,已知货箱长10米,宽6米,3米(竹排于水面持平)为使货箱安全通过,货箱顶部两
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![如图,是一抛物线形拱桥,拱桥o离水面高4米,水面宽度AB=10米,水面宽度AB =10米,现有一竹排运送一只货箱从桥下经过,已知货箱长10米,宽6米,3米(竹排于水面持平)为使货箱安全通过,货箱顶部两](/uploads/image/z/4071520-64-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E6%98%AF%E4%B8%80%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%BD%A2%E6%8B%B1%E6%A1%A5%2C%E6%8B%B1%E6%A1%A5o%E7%A6%BB%E6%B0%B4%E9%9D%A2%E9%AB%984%E7%B1%B3%2C%E6%B0%B4%E9%9D%A2%E5%AE%BD%E5%BA%A6AB%3D10%E7%B1%B3%2C%E6%B0%B4%E9%9D%A2%E5%AE%BD%E5%BA%A6AB+%3D10%E7%B1%B3%2C%E7%8E%B0%E6%9C%89%E4%B8%80%E7%AB%B9%E6%8E%92%E8%BF%90%E9%80%81%E4%B8%80%E5%8F%AA%E8%B4%A7%E7%AE%B1%E4%BB%8E%E6%A1%A5%E4%B8%8B%E7%BB%8F%E8%BF%87%2C%E5%B7%B2%E7%9F%A5%E8%B4%A7%E7%AE%B1%E9%95%BF10%E7%B1%B3%2C%E5%AE%BD6%E7%B1%B3%2C3%E7%B1%B3%EF%BC%88%E7%AB%B9%E6%8E%92%E4%BA%8E%E6%B0%B4%E9%9D%A2%E6%8C%81%E5%B9%B3%EF%BC%89%E4%B8%BA%E4%BD%BF%E8%B4%A7%E7%AE%B1%E5%AE%89%E5%85%A8%E9%80%9A%E8%BF%87%2C%E8%B4%A7%E7%AE%B1%E9%A1%B6%E9%83%A8%E4%B8%A4)
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