两种药物合用,能产生或增强毒副反应,这种配伍关系是()
A.相须
B.相畏
C.相杀
D.相恶
E.相反
参考答案:E
全口义齿排牙时,平面前部的上下定位主要决定因素是()
A.唇的长短
B.前牙的美观
C.牙槽嵴的丰满度
D.牙弓的形态
E.软组织的吸收程度
When you are sleeping, you had better _____ all your windows closed. [ ]
A. not to keep
B. not keep
C. not to keeping
D. not keeping