单项选择题
两侧髁突水平轴的延长线相交于枕骨大孔前的角度为()
A.100°~110°
B.110°~125°
C.125°~140°
D.145°~160°
E.160°~170°
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单项选择题
A.100°~110°
B.110°~125°
C.125°~140°
D.145°~160°
E.160°~170°
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