多数前牙缺失的可摘义齿设计中,在牙弓的后段放置间接固位体,以对抗义齿的翘动。以下最合适的卡环设计是()
A.间隙卡环
B.长臂卡环
C.回力卡环
D.对半卡环
E.双臂卡环
参考答案:A
Marco found the walls of the Summer Palace were covered______gold and silver and the Hall was so large it could easily______6,000 people for dinner.
A.with,seated
B.in,seated
C.in,seat
D.with,be seated
从两个角度进行风险分析,一个是技术风险分析,另一个是()
A.商业风险分析
B.网络安全
C.工作质量
D.成本估计