急性脑血管病(卒中)中,发病最快的是() ["高血压脑病","脑出血","脑血栓形成","脑栓塞","蛛网膜下腔出血"]
丙型肝炎的潜伏期为() ["1~6月","2~6月","2周~6月","3~6月","1~3月"]
引起地方性甲状腺肿的最常见原因是:() ["碘缺乏","碘过多","TH合成障碍","致甲状腺肿物质","TH需要量增加"]
关于室间隔缺损的阐述,不正确的是() ["室间隔缺损患者均有心电图异常改变","可出现双侧心室肥大","可出现心电轴左偏","可表现为左心室肥大","以膜部缺损最多见"]
5-FU的抗肿瘤作用() ["阻止脱氧尿苷酸甲基化为脱氧胸苷酸","阻止肌苷酸转变为鸟苷酸","阻止胞苷酸转变成脱氧胞苷酸","阻止叶酸转变成四氢叶酸","阻止肌苷酸转变为腺苷酸"]
连铸使用大型中包的优点是什么?