统计的研究内容是() ["研究样本","研究个体","研究变量之间的相关关系","研究总体","研究资料或信息的收集、整理和分析"]
支气管哮喘急性发作伴窦性心动过速,不正确的治疗是() ["硫酸沙丁胺醇吸入","鼻导管吸氧","普萘洛尔口服","异丙托溴铵吸入","地塞米松静脉滴注"]
下列哪个不是脑栓塞的来源:() ["高血压性心脏病","心房纤颤","动脉粥样硬化斑块脱落","长骨骨折","风心病瓣膜赘生物脱落"]
维持性血透患者最主要的死亡原因是() ["消化道出血","心血管并发症","尿毒症脑病","肾性骨病","感染"]
前壁心肌梗死合并房室传导阻滞表明() ["梗死面缩小","心肌损伤缓解","病情缓解","梗死范围广泛","心肌缺血加重"]
下排气式压力蒸汽灭菌原理是什么?