M点高程HM=43. 251m,测得后视读数a=1. 000m,前视读数b=2. 283m。则视线高Hi和待求点N的高程分别为:
A. 45. 534m,43. 251m B. 40. 968m,38. 6S5m
C. 44. 251m,41. 968m D. 42. 251m,39. 968m

2023-08-19



参考答案:C

提示:Hi=HA+a,HB=Hi+b。

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