寻租有多种定义，归纳起来看，寻租是人们为获得经济租而寻求权力拥有者的（）的行为。
A、庇护
B、辅导
C、腐败
D、补贴
参考答案：A
---Why are you so late?
---I was on the way when it to me that I had left my book home,so I had to fetch it.[ ]
A. occurred
B. hit
C. happened
D. reminded
请简述罗茨鼓风机的工作原理？
