急性肺源性心脏病肺动脉高压形成的最主要原因是() ["A．肺毛细血管床减少","B．肺小动脉炎","C．血液黏度增加","D．缺氧引起肺小动脉痉挛","E．血容量增加"]
下列限时器中限时最不精确的是() ["A．电子管限时器","B．晶体管限时器","C．机械式限时器","D．集成电路限时器","E．同步电机式限时器"]
听神经瘤X(γ)刀治疗的适应证是() ["A．直径≤3cm","B．无脑干压迫症状","C．高龄、不能耐受手术者","D．试图保护听力者","E．以上都是"]
与椎骨有关的是哪项() ["A．棘突","B．翼状突","C．髁状突","D．后床突","E．喙状突"]
确诊伤寒最有力的证据是() ["A．长程稽留热","B．玫瑰疹","C．血常规白细胞减少，嗜酸性粒细胞消失","D．肥达反应阳性","E．血培养见伤寒沙门菌"]
肥厚性瘢痕一般在烧伤后_________ 开始出现，大约在____________ 最明显，成熟期为____________ 。
