心脏手术后引起脑栓塞的最常见因素是() ["血栓","心内残留气体","心内残留异物","脑内血管出血","过度抗凝"]
低心排综合征的主要治疗措施是() ["增加心脏前负荷","降低心脏后负荷","增强心肌收缩力","以上有一项不是","以上全都是"]
下列哪项不属于低心排综合征表现() ["中心静脉压低","动脉压降低","无尿","脉搏细弱","神志淡漠"]
按电动机运行的持续时间,工作方式可分为“连续”、()和“断续”三种。
目前建立体外循环的条件是() ["低温麻醉","血液稀释","血液肝素化","以上有一项不是","以上都是"]
三相异步电动机的机械特性属于()特性。