单肺通气适应症
A．肺脓疡(脓液量超过50m
B．胸主动脉瘤
C．肺泡蛋白沉积症
D．全肺切除术
E．大咯血
参考答案：A,B,C,D,E
机车完成监控装置安装后在调试前应做好哪些准备？
All of us want very much to see these amusing movies，especially _____ you referred to just now．
A．any
B．it
C．the one
D．one
