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已知A.B两点的高程分别为100m.50m,则B.A两点的高差hBA为()。A.50mB.-50mC.150mD.-150m
已知A.B两点的高程分别为100m.50m,则B.A两点的高差hBA为()。
A.50m
B.-50m
C.150m
D.-150m
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已知A.B两点的高程分别为100m.50m,则B.A两点的高差hBA为()。
A.50m
B.-50m
C.150m
D.-150m
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+0.005m,-0.009m。已知A点高程HA=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.往.返测高差闭合差为-0.004m
A.+0.001m
B.一0.001m
C.+0.002m
D.一0.002m
A.152.600m
B.151.828m
C.152.386m
D.152.214m