M点高程HM = 43. 251m,测得后视读数a=1. 000m,前视读数b=

考试题库2022-08-02  16

问题 M点高程HM = 43. 251m,测得后视读数a=1. 000m,前视读数b=2. 283m。则N点对M点的高差hMN和待求点N的高程HN分别为:A. 1. 283m ,44. 534mB. -3. 283m,39. 968mC. 3. 283m ,46. 534mD. -1. 283m,41. 968m

选项 A. 1. 283m ,44. 534m
B. -3. 283m,39. 968m
C. 3. 283m ,46. 534m
D. -1. 283m,41. 968m

答案 D

解析 提示:HB=HA+hAB=HA+(a-b)。
转载请注明原文地址:https://tihaiku.com/jzgc/2165096.html

最新回复(0)