列静脉哪几个属肝门静脉系()。 ["肝静脉","脾静脉","肾静脉","胃左静脉","肠系膜下静脉"]
目前引起糖尿病的主要死亡原因是() ["酮症酸中毒","感染","大血管病变","神经病变","非酮症高渗性昏迷"]
多发性硬化急性发作最有效的治疗是() ["大剂量免疫球蛋白","血浆交换","甲泼尼龙冲击","大剂量泼尼松","干扰素-β"]
乙肝病毒的英文缩写是() ["HAV","HBV","HIV","HCV","HDV"]
脊柱损伤后,跟腱反射消失,膝腱反射正常,可能为脊髓哪一节段损伤() ["S1以下","S2以下","L5以下","L2以下","T12以下"]
试述房间隔缺损的分型。