地形图上,量得A点高程为21.17m,B点高程为16.84m,AB距离为279.50m,则直线AB的坡度为()

分类: (市政施工)基础知识 发布时间: 2023-11-02 23:42 浏览量: 0

地形图上,量得A点高程为21.17m,B点高程为16.84m,AB距离为279.50m,则直线AB的坡度为()

A.6.8%

B.1.5%

C.-1.5%

D.-6.8%

正确答案是C