牙周袋的最佳解释是()
A.PD≥3mm
B.PD≥5mm
C.PD≥3mm,未见上皮附着向根方增殖
D.只与上皮附着向根方增殖有关
E.与骨丧失有关,上皮附着可正常
参考答案:D
It was announced that only when the fire was under control_______to return to their homes.
A.the residents would be permitted
B.had the residents been permitted
C.would the residents be permitted
D.the residents had been permitted
对偶三角瓣适用于()
A.整复邻近组织的缺损
B.松解挛缩的瘢痕
C.覆盖感染的创面
D.作毛发的移植
E.器官再造