单选题:在颌堤上画出的口角线为(  )。

题目内容:
在颌堤上画出的口角线为(  )。 A.上颌第一前磨牙远中标志线
B.上颌尖牙远中标志线  ⊙考试大o在线考试中心⊙
C.上颌侧切牙远中标志线
D.下颌尖牙远中标志线
E.下颌第一前磨牙远中标志线
参考答案:
答案解析:

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