單項選擇題成人下頜角為()
A.140°~160°
B.130°~140°
C.120°~125°
D.125°
E.<0°
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1.單項選擇題3歲時下頜角為()
A.140°~160°
B.130°~140°
C.120°~125°
D.125°
E.<0°
2.單項選擇題12歲時下頜角為()
A.140°~160°
B.130°~140°
C.120°~125°
D.125°
E.<0°