(来学网)胸部前后位摄影的受检者体表剂量标准是
  • A.
    (来学网)≤0.1mGy
  • B.
    (来学网)≤0.2mGy
  • C.
    (来学网)≤0.3mGy
  • D.
    (来学网)≤0.4mGy
  • E.
    (来学网)≤0.5mGy