(来学网)重度狭窄的主动脉瓣口面积小于_____
  • A.
    (来学网)0.5cm2
  • B.
    (来学网)0.75cm2
  • C.
    (来学网)1.5cm2
  • D.
    (来学网)2cm2
  • E.
    (来学网)2.5cm2