对不同年龄组手术病人中患心脏病的调查中，哪项是错误的() ["A．31～40岁占2%","B．41～50岁占6%","C．51～60岁占23%","D．61～70岁占45%","E．71～80岁占100%"]
婴幼儿肺炎需要静脉输液时，使用的液体最好是() ["A．1:1液","B．2:1液","C．4:3:2液","D．3:2:1液","E．维持液"]
陈旧性心肌梗死患者并发心绞痛，拟行腹股沟疝修补术，哪种麻醉方式不妥() ["A．局麻","B．静脉麻醉","C．吸入麻醉","D．复合全麻","E．脊麻"]
防治重症哮喘病儿痰栓阻塞小支气管的最主要措施是() ["A．气管切开","B．应用糖皮质激素","C．吸痰管吸痰","D．口服祛痰药","E．多饮水"]
下列关于心电图的叙述，哪项错误() ["A．心房兴奋产生P波","B．P-R间期为0.12～0.20秒","C．QRS时间不应超过0.1秒","D．P-R间期反应希氏束的传导时间","E．T波在心室收缩时出现"]
背景
