(来学网)钴治疗机准直器其轴心线回转时轴心偏差不超过
  • A.
    (来学网)1mm
  • B.
    (来学网)2mm
  • C.
    (来学网)3mm
  • D.
    (来学网)0.5mm
  • E.
    (来学网)1.5mm