(来学网)当肩外展至何角度时,肩峰下滑囊完全缩进肩峰下面,冈上肌腱很容易受到摩擦,日久形成劳损
  • A.
    (来学网)30°
  • B.
    (来学网)45°
  • C.
    (来学网)60°
  • D.
    (来学网)90°
  • E.
    (来学网)120°