有关根管预备的目的,错误的是A.消除感染源 B.扩大根管便于根管消毒 C.扩大根尖孔 发布时间:2017-06-16 04:40 │ 来源:www.tikuol.com 题型:单项选择题 问题: 有关根管预备的目的,错误的是A.消除感染源B.扩大根管便于根管消毒C.扩大根尖孔以利引流D.减少弯曲根管的弯曲度E.预备根管形态以利充填
题型:单项选择题 The couple __________about 1990, but happily they reunited on the Valentine’s day.A. broke up B broke down C. broke out D. broke into 查看答案