一条河宽1km,两岸各有一座城市A与B...一条河宽1km,两岸各有一座城市A与B,A与B的直线距离是4km,今须铺设一条电缆连A与B,已知地下电缆修建费用为2万元/km,水下电缆为4万元/km,假定河两岸是直线,
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 14:51:19
![一条河宽1km,两岸各有一座城市A与B...一条河宽1km,两岸各有一座城市A与B,A与B的直线距离是4km,今须铺设一条电缆连A与B,已知地下电缆修建费用为2万元/km,水下电缆为4万元/km,假定河两岸是直线,](/uploads/image/z/13775580-36-0.jpg?t=%E4%B8%80%E6%9D%A1%E6%B2%B3%E5%AE%BD1km%2C%E4%B8%A4%E5%B2%B8%E5%90%84%E6%9C%89%E4%B8%80%E5%BA%A7%E5%9F%8E%E5%B8%82A%E4%B8%8EB...%E4%B8%80%E6%9D%A1%E6%B2%B3%E5%AE%BD1km%2C%E4%B8%A4%E5%B2%B8%E5%90%84%E6%9C%89%E4%B8%80%E5%BA%A7%E5%9F%8E%E5%B8%82A%E4%B8%8EB%2CA%E4%B8%8EB%E7%9A%84%E7%9B%B4%E7%BA%BF%E8%B7%9D%E7%A6%BB%E6%98%AF4km%2C%E4%BB%8A%E9%A1%BB%E9%93%BA%E8%AE%BE%E4%B8%80%E6%9D%A1%E7%94%B5%E7%BC%86%E8%BF%9EA%E4%B8%8EB%2C%E5%B7%B2%E7%9F%A5%E5%9C%B0%E4%B8%8B%E7%94%B5%E7%BC%86%E4%BF%AE%E5%BB%BA%E8%B4%B9%E7%94%A8%E4%B8%BA2%E4%B8%87%E5%85%83%2Fkm%2C%E6%B0%B4%E4%B8%8B%E7%94%B5%E7%BC%86%E4%B8%BA4%E4%B8%87%E5%85%83%2Fkm%2C%E5%81%87%E5%AE%9A%E6%B2%B3%E4%B8%A4%E5%B2%B8%E6%98%AF%E7%9B%B4%E7%BA%BF%2C)
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