新生儿下颌角的度数为A.125° B.140°~160° C.130°~140° D.110° E.120°~125°

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问题 新生儿下颌角的度数为

选项 A.125°
B.140°~160°
C.130°~140°
D.110°
E.120°~125°

答案B

解析
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