(来学网)正常成人甲状腺上动脉的阻力指数(RI)是
  • A.
    (来学网)0.1-0.19
  • B.
    (来学网)0.2-0.29
  • C.
    (来学网)0.3~0.39
  • D.
    (来学网)04~0.49
  • E.
    (来学网)0.5~0.6