5.petrous ridges在Caldwell method 30度時應落在何處?
(A)眼眶下1/3
(B)眼眶上1/3
(C)與下眼眶緣切齊或正下方
(D)與上眼眶緣切齊或正上方
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統計: A(496), B(215), C(1234), D(68), E(0) #1150404
統計: A(496), B(215), C(1234), D(68), E(0) #1150404