问题 单项选择题 共用题干题

患者,男,32岁,牙冠完整,明显唇向倾斜,不松动,X线片未见异常。拟失活根管充填,桩核冠矫正倾斜。

根充后开始桩核修复的最早时间是()

A.3周

B.1周

C.3天

D.2天

E.1天

答案

参考答案:C

问答题

试简要分析公元3到6世纪,我国封建社会的政治特点及发展趋势。从中我们可以获得哪些深刻的启示?

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

                                                                                                                                                           

选择题