患者缺失;间食物嵌塞:前牙唇侧组织倒凹明显。
义齿右后方固位体应设计为()
A.圈形卡环
B.三臂卡环
C.联合卡环
D.三臂卡环
E.双臂卡环
参考答案:C
连词成句。
1. many to count too are there
2. a new have I schoolbag
3. is bag heavy my
4. what your in is pencil-case
5. books have how do many you
混合煤气一般由()和()混合而成。