题目内容

全站仪观测水平角时采用盘左盘右的方法，不能消减下列哪项误差？（）

A. 度盘偏心误差
B. 视准轴不垂直于横轴误差
C. 横轴不垂直于竖轴
D. 照准部水准管轴不垂直于竖轴的误差

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全站仪对中误差所引起的角度偏差与测站点到目标点的距离成反比。该表述()

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