规模报酬是指在技术水平不变的条件下,当各种生产要素按相同比例增加,即生产规模扩大时( )的变化情况。
A.经营成本B.经营利润C.销量D.产量
参考答案:D
—May I go out and play games?
—No, you _____. You have got a lot of work to do. [ ]
A. needn't
B. wouldn't
C. mustn't
D. won't
沈阳华晨汽车公司生产()。