(来学网)重度低氧血症指PaO2低于
  • A.
    (来学网)10MMHG
  • B.
    (来学网)40MMHG
  • C.
    (来学网)80MMHG
  • D.
    (来学网)20MMHG
  • E.
    (来学网)60MMHG
正确答案:
B