[名词解释] 消化道重复畸形(duplicationofthealimentarytract)

试述尿道下裂的临床表现，治疗原则? 加入下列哪种物料可改善凡士林吸水性 ["A、植物油","B、液体石蜡","C、鲸蜡","D、羊毛脂","E、海藻酸钠"] 写出睾丸鞘膜积液的诊断要点及治疗原则? 鸡胸(pectuscarinatum) 下列是软膏油脂类基质的是 ["A、甲基纤维素","B、卡波普","C、硅酮","D、甘油明胶","E、海藻酸钠"] 消化道重复畸形(duplicationofthealimentarytract)