题型:判断题 室间隔缺损超声诊断要点有()A.室间隔局部回声失落B.脉冲波多普勒显示湍流的最大速度和频谱形成C.均可出现左心室、左心房增大D.无肺动脉高压时,单纯室间隔缺损的频谱为全收缩期、单峰、高速的负向湍流频谱E.随着肺动脉压力的逐渐增高,左向右的分流速度逐渐增高 查看答案
题型:判断题 Several of the passengers were hurt and one was taken to hospital. Luckily ____ was killed.A.no oneB.not allC.noneD.no other 查看答案