有利于继发性肝癌诊断的是() ["绕以较窄声晕的低回声结节","非癌组织呈肝硬化改变","门静脉内找到癌栓","中高回声结节周围有较宽弱回声环","中高回声结节内呈镶嵌样结构"]
下列有关房室结的描述,不正确的是() ["房室结位于房间隔的右后下部、冠状窦开口前、三尖瓣附着部的上方","长7mm,宽4mm","其上部为移行细胞区,与心房肌连接,中部为致密部,肌纤维交织排列","下部纤维呈纵向走行,延续至希氏束","房室结的血供通常来自左冠状动脉"]
对地面涂料的基本要求有()。 ["A、透气性良好","B、耐水性良好","C、耐磨性良好","D、抗冲击性良好","E、耐碱性良好"]
急性腹痛伴休克,最常见的病因是() ["急性心肌梗死","大叶性肺炎","胃、十二指肠溃疡穿孔","急性坏死性胰腺炎","急性坏疽性胆囊炎"]
同步电复律不适用于()。 ["心房扑动","心房颤动","心室颤动","室上性心动过速","室性心动过速"]
气化炉停车后泄压速率为多少?