66.圖中箭頭所指的放射線不透過性白線(radiopaque line)為下列何者?


(A)門齒孔(incisive foramen)
(B)上顎間縫(intermaxillary suture)
(C)鼻中隔(nasal septum)
(D)鼻腭管側壁(lateral walls of nasopalatine canal)

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