题目内容

下颌骨骨折最易引起呼吸道阻塞的是哪个部位?

A. 下颌角骨折
B. 双颌孔骨折
C. 髁颈部骨折
D. 髁孔部骨折
E. 正中骨折

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唐代时期我国的船只已到达了斯里兰卡。()

商品降权可以在多久内申诉?

岫岩玉出土于河南南阳。()

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