全口义齿合适的磨光面可以()
A.有助于义齿的稳定
B.避免咬颊咬舌
C.提高咀嚼效率
D.使发音清楚
E.增加面颊部丰满度
参考答案:A
--It’s said that __________ people died from car accidents in 2011.
--How terrible!
A.10 thousands
B.thousand of
C.10 thousands of
D.thousands of
TYJL-Ⅱ型计算机联锁系统监控机死机的故障主要现象?如何处理?