单项选择题
A.-170.919B.170.919C.104.302D.-104.302
A.50.00mB.70.71mC.100.00mD.141.42m
A.1/25000B.1/25C.1/2500D.1/250
A.偶然误差B.系统误差C.可能是偶然误差也可能是系统误差D.既不是偶然误差也不是系统误差
A.温度B.电磁波从仪器到目标传播的时间C.光速D.电磁波从仪器到目标往返传播的时间
A.视准轴B.横轴C.指标差D.度盘分划
A.照准部偏心差B.视准轴误差C.横轴误差D.竖轴误差
A.绝对高程B.海拔C.高差D.相对高程
A.1m,2m,5mB.0.001m,0.002m,0.005mC.0.01m,0.02m,0.05mD.0.1m,0.2m,0.5m
A.等高距越大B.地面坡度越陡C.等高距越小D.地面坡度越缓
A.竖轴竖直B.视准轴水平C.十字丝横丝水平D.十字丝竖丝竖直