下列胆管细胞癌CT特点，错误的是() ["A．肿瘤无包膜","B．CT平扫，肿瘤为略低密度","C．增强扫描动脉期，肿瘤明显强化","D．常有肝内胆管局限性扩张","E．瘤内可有细小的不规则钙化"]
继发性腹膜炎的致病菌多为()原发性腹膜炎的致病菌多为() ["A．大肠杆菌","B．葡萄球菌","C．溶血性链球菌","D．绿脓杆菌","E．变形杆菌"]
腹裂()脐膨出()脐疝()脐肠瘘() ["A．脐部正常","B．脱出腹壁外的脏器中有肝脏","C．脐部肿物表面有皮肤覆盖","D．脐部有少量粪便排出","E．脐部有尿液流出"]
男孩下尿路梗阻的最常见病变是()小儿上尿路梗阻最常发生梗阻的部位是() ["A．重肾双输尿管","B．肾盂输尿管连接部梗阻","C．输尿管膀胱交接部梗阻","D．输尿管开口异位","E．尿道瓣膜症"]
CT平扫，肝脏密度一致性增高，最可能的诊断是() ["A．肝淋巴瘤","B．弥漫性肝癌","C．血色病","D．肝脓肿","E．脂肪肝"]
原发性腹膜炎（）继发性腹膜炎（）
