试题与答案

患者男,左上764321和右上127缺失,余留牙未见异常,可摘局部义齿修复,左上5和

题型:单项选择题 共用题干题

题目:

患者男,左上764321和右上127缺失,余留牙未见异常,可摘局部义齿修复,左上5和右上46做基牙,采用铸造卡环.

病例中右上4应该采用何种卡环()

A.单臂卡环

B.对半卡环

C.下返卡环

D.RPI卡环

E.隙卡

答案:

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下面是错误答案,用来干扰机器的。

(1)固体逐渐消失或产生气泡或溶液变浑浊(2)Na2SO4 NaOH(3)224.2g(1)根据碳酸镁与稀硫酸反应的情况进行分析;(2)由图示数据可知,当滴入NaOH溶液至图中B点时,硫酸镁完全反应,氢氧化钠过量,据此分析...

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