(2018年真题)采用水准仪测量工作井高程时,测定高程为3.460m,后视读数为

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问题 (2018年真题)采用水准仪测量工作井高程时,测定高程为3.460m,后视读数为1.360m,已知前视测点高程为3.580m,前视读数应为( )。A.0.960m B.1.120mC.1.240m D.2.000m

选项 A.0.960m
B.1.120m
C.1.240m
D.2.000m

答案 C

解析 hAB=a-b=HB-HA,则1.360m-b=3.580m-3.460m,故b=1.240m。
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