【单选题】支气管哮喘患者发生I型呼吸衰竭最主要的机制是( )。
【单选题】Water and air are _______ to human beings. We can not live without them
【单选题】支气管哮喘患者发生I型呼吸衰竭最主要的机制是()
【单选题】We can not make curry fried rice without ( ).
【单选题】支气管哮喘患者发生I型呼吸衰竭最主要的机制是
【单选题】-- Can I have a day off tomorrow, Mr. Adam? --- ________. We can manage without you.