动脉血氧分压(PaO2)低于(),或伴有二氧化碳分压(PaO2)高于(),即为呼吸衰竭。
参考答案:60mHg(8KPa),50mHg(6.67KPa)
Do you think Tony will be chosen to _____ his class at the school sports meeting? [ ]
A. represent
B. stand for
C. influence
D. go for
三沿地区包括沿江、沿海、沿铁路干线。( )