(来学网)下述肺功能检查指标中,哪一项表明手术的危险性最大_____
  • A.
    (来学网)FEV1.01.6L
  • B.
    (来学网)FEV1%=0.6
  • C.
    (来学网)PaCO243mmHg
  • D.
    (来学网)MVV<50%预计值
  • E.
    (来学网)肺活量占预计值60%