试题详情

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:

A45. 534m,43. 251m

B40. 968m,38. 6S5m

C44. 251m,41. 968m

D42. 251m,39. 968m