理论上,对于单颌覆盖义齿,最佳的覆盖基牙数目是
A.1~2个
B.2~3个
C.2~4个
D.3~4个
E.4~5个
参考答案:C
- Do you mind my opening the window?
-______I feel a bit cold.
A. Of course not.
B. I would rather you didn' t.
C. Go ahead.
D.Why not?
金融安全的特征()。
A.稳健性
B.有序性
C.有效性
D.可操作性
E.全部包含