题型:选择题 —How are you going to the Summer Palace? —We're going there ____ bike. [ ]A. for B. at C. of D. by 查看答案
题型:单项选择题 男,40岁,右下第一磨牙死髓牙,经根管治疗后以PFM全冠修复,经牙体制备取模后,在全冠初戴之前,尚需作何种处理()A.不需作任何处理B.用塑料全冠作暂时保护性修复C.用金属全冠作保护性修复D.制作活动义齿保持间隙E.制作间隙保持器 查看答案