患者,男,55岁,D6缺失,D5牙冠较短且固位形差,若设计活动桥,D5上应设计()
A.回力卡环
B.杆形卡环
C.长臂卡环
D.联合卡环
E.双臂卡环
参考答案:C
—Do you think I should accept his invitation, Jim?
— If I were you, I certainly would.
A.None of your business.
B.It depends.
C.Why not?
D.I don't think so.
保安员在执勤巡逻中发现()时,要检验其证件,必要时带到治安办公室进一步审查。