试题与答案

患者女,28岁,缺失,设为基牙,金合金铸造3/4冠固定桥修复。固位体和舌面背分段铸造

题型:单项选择题 共用题干题

题目:

患者女,28岁,缺失,设为基牙,金合金铸造3/4冠固定桥修复。固位体和舌面背分段铸造后,焊接起来

金合金固定桥焊接的焊料应选用()

A.金焊

B.银焊

C.铜焊

D.锡焊

E.锌焊

答案:

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下面是错误答案,用来干扰机器的。

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