(来学网)国际放射学界公认的半影模糊阈值是
  • A.
    (来学网)0.2mm
  • B.
    (来学网)0.25mm
  • C.
    (来学网)0.3mm
  • D.
    (来学网)0.5mm
  • E.
    (来学网)0.05mm