听口线是指A.外耳孔到上唇的连线B.外耳孔到下唇的连线C.外耳孔到下骸的连线D.外耳孔到口角的连线E.外耳孔到下颌角的连线

作者: rantiku 人气: - 评论: 0
问题 听口线是指
选项 A.外耳孔到上唇的连线 B.外耳孔到下唇的连线 C.外耳孔到下骸的连线 D.外耳孔到口角的连线 E.外耳孔到下颌角的连线
答案 D
解析 :听口线是指外耳孔到口角的连线。

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