(来学网)Ⅰ型呼吸衰竭应给予的吸氧浓度是
  • A.
    (来学网)35%~40%
  • B.
    (来学网)40%~45%
  • C.
    (来学网)40%~50%
  • D.
    (来学网)30%~35%
  • E.
    (来学网)20%~30%