在慢性输尿管阻塞时输尿管表现为() ["A．蠕动增强","B．正常蠕动","C．蠕动减弱","D．肿块形波纹","E．蠕动增强与弛缓交替出现"]
化学性食物中毒()生物性食物中毒()肉毒杆菌食物中毒() ["A．砷、升汞、有机磷农药中毒","B．毒蕈、河豚、生鱼胆等中毒","C．腊肠中毒","D．咸鱼中毒","E．隔夜粥中毒"]
腰椎间盘突出症与腰椎管狭窄的鉴别，主要依据是() ["A．有无下肢放射性疼痛","B．有无间歇性跛行","C．腰部疼痛的程度","D．CT","E．X线平片"]
女，43岁，左侧腰部不适2年余，结合所示图像，最可能的诊断是() ["A．左肾髓样脂肪瘤","B．左肾盏憩室","C．左肾囊肿","D．左肾积水","E．左肾错构瘤"]
细菌性食物中毒流行性病学特点如何?
感染型食物中毒与毒素型食物中毒有什么不同?
