A.相对形状
B.标准位置
C.绝对位置
D.相对位置
用激光准直仪测量超长导轨水平平面内的直线度误差时,只需将目镜转过()即可。
A.90°
B.180°
C.270°
D.4°
床身刮研时,刮平导轨Ao以A1导轨为基准测量两导轨的扭曲度,在专用桥板上放水平仪,要求(),直线只许中凸,要求直线度0.005mm/1000mm,0.01mm/全长。
A.0.002mm/1000mm,0.01mm/全长
B.0.003mm/1000mm,0.015mm/全长
C.0.005mm/1000mm,0.01mm/全长
D.0.004mm/1000mm,0.02mm/全长