试题与答案

以下水平截面的冠内精密附着体中,哪种的固位力最强() A.H形 B.T形 C.V形

题型:单项选择题 A1/A2型题

题目:

以下水平截面的冠内精密附着体中,哪种的固位力最强()

A.H形

B.T形

C.V形

D.I形

E.差别不大

答案:

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