何谓等高线？它有哪些特性？ -题库考试答案搜索网

何谓等高线？它有哪些特性？

问答题

2022-04-19 02:24

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正确答案

等高线是地面上高程相同的各相邻点连成的闭合曲线。
1）位于同一条等高线上各点的高程相同。
2）等高线是闭合的曲线。
3）等高线一般不能相交。
4）等高线与山脊线，山谷线正交。
5）等高线在图上的平距越大，地面坡度越缓；平距越小，则坡度愈陡。

试题解析

标签：国家开放大学(水利工程测量)

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