铸造支架对牙合支托窝宽度的要求是()
A.前磨牙颊舌径的1/2
B.磨牙的颊舌径的1/2
C.前磨牙的近远中径的1/2
D.磨牙近远中径的1/2
E.宽度约为2mm
参考答案:A
--- I’m afraid it’s going to rain this afternoon.
--- ______ Look at the dark and cloudy sky.
A.Not really.
B.Is it?
C.Why not?
D.I guess so.
四枚破斜纹又可以叫做()。
A.四枚不规则缎纹
B.四枚斜纹
C.山形斜纹缎纹
D.急斜纹