某河段上、下断面的河底高程分别为725m和425m,河段长120km,则该河段的河道纵比降为( ) -题库考试答案搜索网

某河段上、下断面的河底高程分别为725m和425m,河段长120km,则该河段的河道纵比降为( )

单选题

2021-07-17 23:27

A、0.25
B、2.5
C、2.5%
D、2.5‰

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正确答案

D

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