(来学网)出现呕血说明胃内积血量至少达
  • A.
    (来学网)100~150ml
  • B.
    (来学网)150~200ml
  • C.
    (来学网)200~250ml
  • D.
    (来学网)250~300ml
  • E.
    (来学网)300~350ml