发帖
雷达卡
判断说明
1> A constant returns to scale technology has constant average costs.
2> A risk-averse British Rail fare-dodger is indifferent between a 10% increase in the probability of being caught by ticket inspectors and a 10% increase in the fine imposed on being caught.
3> A reduction in the income tax rate will result in increased supply of labour provided that leisure is a normal good.
小弟谢先
[em09][em09] 
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