(来学网)X射线全身照射时,常对剂量均匀性进行校正,均匀性应控制在多少以内
  • A.
    (来学网)5%
  • B.
    (来学网)7%
  • C.
    (来学网)8%
  • D.
    (来学网)9%
  • E.
    (来学网)10%