“ ‘Is dying hard, Daddy’‘No, I think it’s pretty easy, Nick. It all depends. ’”Questions:A. Who’s the author of the quoted part, and what’s the title of the workB. What was Nick preoccupied with when he asked the questionC. Why did the father add “It all depends” after he answered his son’s question

二次回风系统，夏季采用二次回风，冬季采用一次回风方案，这样做是否有好处？