食管癌的转移方式最主要的是（） ["食管壁内扩散","血行扩散","淋巴道转移","直接浸润邻近器官","跳跃式转移"]
感染性心内膜炎最常见的致病菌为（） ["草绿色链球菌","金黄色葡萄球菌","产气杆菌","大肠杆菌","肺炎链球菌"]
静脉石是指（） ["静脉内血栓","肾内的尿结石","静脉血栓钙盐沉积","肝静脉内胆盐沉积","静脉内钙盐沉积"]
抗凝系统的组成应包括（） ["蛋白C系统","纤维蛋白原","组织因子途径抑制剂","抗凝血酶-Ⅲ","肝素"]
下列哪一种先天性心脏病可能出现水冲脉及枪击音（） ["房间隔缺损","室间隔缺损","动脉导管未闭","法洛四联症","艾森曼格综合征"]
清创缝合术
