激光跟踪架上刻度尺指针的零点应与B4箱上显示值一致,误差不大于(),否则应移动激光接收器将刻度尺指针准确指零。[322030101]
A.0.2mm
B.0.3mm
C.0.4mm
D.0.5mm
正确答案是A