税收的超额负担是指政府税收导致纳税人的福利损失大于政府（），从而形成税外负担，引起效率损失。
参考答案：税收收入收益；
He is now _____, so he has to look for a job in a short time. Otherwise, his family will face the trouble of
lacking money. [ ]
A. at work
B. out of work
C. for work
D. on the way to work
除了给发动机供油外，燃油还有什么用途？
A、冷却IDG滑油
B、冷却发动机滑油
C、以上A和B
D、都不对
