单项选择题
AB的水平距离dAB=145.128m，方位角fAB=97°42′34″，则对应的坐标增量DyAB、DxAB为()。
A.+143.816m、+19.469m
B.+143.816m、-19.469m
C.-143.816m、-19.469m
D.-19.469m、+143.816m
A.128m，方位角fAB=97°42′34″，则对应的坐标增量DyAB、DxAB为()。A.+143.816m、+19.469m
B.+143.816m、-19.469m
C.-143.816m、-19.469m
D.-19.469m、+143.816m
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