330MW密封风机跳闸的条件有哪些?
关于肺气肿X线平片表现,说法错误的是() ["膈肌低平","肺透亮度增高、三均匀","深吸气时肺体积变化明显","胸骨后间隙增宽","心影狭长,心尖离开膈肌"]
心力衰竭最好控制多久再进行择期手术() ["1~2周","3~4周","6~8周","3~6个月","l年"]
多发性骨髓瘤可根据下列哪项确诊() ["骨髓大量异常浆细胞","血钙升高","血钙降低","血清蛋白增高","白血病血象"]
击出性骨折的手术治疗宜采用() ["下睑下切口径路,脱出眶内容物切除,眶底重建","下睑下切口径路,眶内容物复位,眶底重建","上颌窦根治术径路,脱出眶内容物切除,眶底重建","上颌窦根治术径路,眶内容物复位,眶底重建","鼻侧切开术,眶内容物复位,眶底重建"]
麻疹概述。