水准测量中设D为后视点,E为前视点;D点的高程是51.237m。若后视读数为1.217m,前视读数为1.365m,则E点的高程是( )。
2023-06-21
A.50.020m
B.51.089m
C.51.385m
D.49.872m
参考答案:B
B.51.089m
C.51.385m
D.49.872m
参考答案:B
2020/2019版教材P77
前视点读数+前视点高程=后视点读数+后视点高程,所以E点高程:51.237+1.217—1.365=51.089。
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