(来学网)正常成人心胸比率一般为 ( )
  • A.
    (来学网)0.5
  • B.
    (来学网)0.56
  • C.
    (来学网)0.55
  • D.
    (来学网)0.6
  • E.
    (来学网)0.4
正确答案:
A