长期食用精制面,而未加大豆副食,易引起脚气病,是因为缺乏() ["维生素B2","维生素A","维生素D","维生素B6","维生素B1"]
为评价某疫苗的流行病学效果,其随访结果见下表: 该疫苗的保护指数是() ["A.5","4","7","8","9"]
疼痛治疗的基本药物是() ["三环类抗抑郁药","非甾体类抗炎药物","抗惊厥类药物","苯巴比妥类药物","阿片类药物"]
胆道闭锁最佳手术时机为() ["生后2个月以内","生后100天以内","生后半年之内","生后一年之内","没有腹腔积液就可手术"]
院内感染所致肺炎中,主要病原体是(). ["肺炎球菌","革兰阴性杆菌","金黄色葡萄球菌","病毒","真菌"]
慢性胃炎治疗原则