(来学网)正常肾脊角的角度为
  • A.
    (来学网)5°~10°
  • B.
    (来学网)15°~25°
  • C.
    (来学网)30°~35°
  • D.
    (来学网)40°~45°
  • E.
    (来学网)50°-55°