单项选择题
A.140°~160° B.130°~140° C.120°~125° D.125° E.<0°
成人下颌角为()A.140°~160°B.130°~140°C.120°~125°D.125°E.<0°
单项选择题成人下颌角为()
3岁时下颌角为()A.140°~160°B.130°~140°C.120°~125°D.125°E.<0°
单项选择题3岁时下颌角为()
12岁时下颌角为()A.140°~160°B.130°~140°C.120°~125°D.125°E.<0°
单项选择题12岁时下颌角为()