汽轮机动静摩擦的原因有()。 ["A、大轴弯曲;","B、上下缸温差大;","C、汽轮机轴封发生变形;","D、汽轮机水冲击。"]
重型肝炎肝性脑病患者口服乳果糖是为了() ["预防消化道出血","防止腹泻","预防肠道真菌感染","加速黄疸消退","降低肠道pH值,保持大便通畅,减少氨的形成和吸收"]
风疹的病原体是()。 ["风疹病毒","人疱疹病毒6型","带状疱疹病毒","腺病毒","合胞病毒"]
PDCH信道分配不成功最主要的原因可能在:() ["A、SGSN","B、PCU","C、GGCN","D、BTS"]
使用干扰素时绝对禁忌() ["年龄10~60岁之外的人","有心、肝、肾代偿功能不全者","肝硬化失代偿期患者","血白细胞减少者","血小板减少者"]
先天性髋关节脱位的治疗原则是什么?