(来学网)正常成人的血量相当于体重的
  • A.
    (来学网)7%~8%
  • B.
    (来学网)10%~15%
  • C.
    (来学网)20%~30%
  • D.
    (来学网)40%~50%
  • E.
    (来学网)50%~60%