(来学网)肺的吸气位与呼气位X线摄影,要获得相同密度影像,Ⅹ线量相差
  • A.
    (来学网)5%~10%
  • B.
    (来学网)10%~15%
  • C.
    (来学网)15%~20%
  • D.
    (来学网)20%~30%
  • E.
    (来学网)30%~40%