在 A 、 B 两点之间进行水准测量,得到满足精度要求的往、返测高差为 h ab =+0.005m , h ba =-0.009m 。已知 A 点高程 H A =417.462m ,则
A.
B 的高程为 417.460m
B.
B 点的高程为 417.469m
C.
往、返测高差闭合差为 +0.014m
D.
B 点的高程为 417.467m
E.
往、返测高差闭合差为 -0.004m
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