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[填空题]
已知A、B两点的坐标值分别为XA=5773.6332m,YA=4244.0980m,XB=6190.4959m,YB=4193.6140m,则坐标方位角αAB=()、水平距离D=()米。
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A.21.7m
B.17.6m
C.18.7m
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
A.+0.001m
B.一0.001m
C.+0.002m
D.一0.002m