窝洞制备中,以下不属于抗力形设计的是()。
A.去除无基釉
B.去除薄壁弱尖
C.邻合面洞制备阶梯
D.邻合面洞制备梯形
E.窝洞外形为圆缓曲线
参考答案:D
My teacher is very nice.I'll never forget the he has done for me.
A.favour
B.kindness
C.help
D.benefit
对癫痫小发作的首选药是
A.乙琥胺
B.苯巴比妥
C.卡马西平
D.硝西泮
E.戊巴比妥