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[问答题] 异位妊娠的B超特点是什么?

在消化性溃疡的治疗中,抑制胃酸分泌作用最强的药物是()。 ["铝碳酸镁","西咪替丁","碳酸氢钠","枸橼酸铋钾","奥美拉唑"] 阑尾炎最重要的发病原因是() ["机体抵抗力下降","阑尾腔内含大量细菌","阑尾周围炎症蔓延","阑尾腔内阻塞并感染","饭后剧烈运动"] 患者李某,72岁,咳嗽,咳痰,痰中带血5个月。胸片提示右侧肺门类圆形阴影,边缘毛糙。原发肿瘤可引起的临床表现有() ["A.胸痛","呼吸困难","肝区疼痛","Horner综合征","声音嘶哑","胸腔积液","上腔静脉阻塞综合征","食欲减退","黄疸","共济失调","骨痛"] Crohn病的病变特点不包括() ["淋巴滤泡形成","黏膜下层淋巴管扩张","黏膜水肿并有裂隙状溃疡","肉芽肿形成","肉芽肿中心可发生干酪样坏死"] 十二指肠球部溃疡患者原疼痛节律消失,变为持续上腹痛,伴频繁呕吐隔宿酵酸性食物。推断患者出现的并发症是()。 ["溃疡出血","溃疡穿孔","多发性溃疡","溃疡癌变","幽门梗阻"] 异位妊娠的B超特点是什么?
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