各证型的郁证均可出现() ["血郁症状","湿郁症状","气郁症状","热郁症状","痰郁症状"]
硬膜外注射吗啡可产生哪项作用() ["镇痛","腹泻","血压下降","红斑","严重的呼吸抑制常见"]
绞窄性肠梗阻的临床表现,下列哪项是错误的() ["呕吐血性或棕褐色液体","持续剧痛无缓解","出现腹膜刺激征","肠鸣音消失","X射线显示膨胀突出的孤立肠襻随时间改变位置"]
郁证的预后多为() ["差","极差","良好","迁延难愈","不一定"]
注射破伤风抗毒素的目的是() ["对易感人群进行预防接种","对可疑或确诊的破伤风患者进行紧急预防成治疗","杀灭伤口中繁殖的破伤风杆菌","主要用于儿童的预防接种","中和与神经细胞结合的毒素"]
磨煤机不能长时间空转的原因是什么?