48.前臂旋前/旋後(pronation/supination)動作的軸心是:
(A)尺骨(ulna)的長軸
(B)橈骨(radius)的長軸
(C)尺骨頭(ulnar head)和橈骨頭(radial head)間的連線
(D)尺骨莖突(ulnar styloid process)和橈骨莖突(radial styloid process)間的連線
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統計: A(342), B(81), C(702), D(226), E(0) #1153324
統計: A(342), B(81), C(702), D(226), E(0) #1153324