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
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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:
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