我国慢性腹泻最常见的病因是() ["原因未明","小肠吸收不良","肠道肿瘤","炎症性肠病","非感染性肠病"]
下列哪项不是甲胎蛋白诊断原发性肝癌的指标() ["甲胎蛋白由低浓度逐渐升高不降","甲胎蛋白与谷丙转氨酶同步上升","甲胎蛋白上升,而谷丙转氨酶正常","甲胎蛋白>500μg/L,持续4周不降","甲胎蛋白>200μg/L,动态观察8周,逐步上升"]
肝脏直接参与多种维生素的代谢转化,可将维生素D转化为() ["1,25-(OH)2-D3","1-(OH)-D3","25-(OH)-D3","2,25-(OH)2-D3","1-(OH)2-D3"]
患者,女性,35岁,因"消化性溃疡"入院。查幽门螺杆菌阳性。下列药物中具有抗幽门螺杆菌作用的是()。 ["西咪替丁","奥美拉唑","氢氧化铝","枸橼酸铋钾","硫糖铝"]
出血坏死性胰腺炎的特点是() ["恶心、呕吐","腹上区疼痛","发热、白细胞升高","血、尿淀粉酶升高","血钙降低"]
涎石症主要好发于(),其与肿瘤鉴别的关键在于:()。