题目内容:
乳牙建完成时下颌角为
A.100°~120° B.120°~125° C.130°~140° D.1400~160° E.150°~170°
参考答案:
乳牙建完成时下颌角为
A.100°~120° B.120°~125° C.130°~140° D.1400~160° E.150°~170°