(来学网)X线诊断机房的副防护应达到的铅当量是
  • A.
    (来学网)0.1mmPb
  • B.
    (来学网)0.2mmPb
  • C.
    (来学网)0.5mmPb
  • D.
    (来学网)1.0mmPb
  • E.
    (来学网)2.0mmPb
正确答案:
D