题目内容
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[单选题]
经纬仪的竖盘按顺时针方向注记,当视线水平时,盘左竖盘读数为90°用该仪器观测一高处目标,盘左读数为75.10'24〃,那么此目标的竖角为()。
A.57o10'24“
B.-14o49'36”
C.14o49'36"
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A.57o10'24“
B.-14o49'36”
C.14o49'36"
A.57o10′24″
B.-14o49′36″
C.14o49′36″
A.5710′24″
B.-1449′36″
C.1449′36″
D.75°10′24″
A.+57º10′24″
B.-14º49′36″
C.+14º49′36″
D.-57º10′24″
A.57°10'24”
B.-14°49'36"
C.14°49'36"
D.-57°10'24”
A.+3′
B.-3′
C.-2′
D.+ 2′
A.+8°41′18″
B.-8°41′18″
C.+8°18′42″
D.-8°18′42″