[名词解释] Ordinal utility 序数效用
[名词解释] 序数效用(Ordinal utility)
[名词解释] 效用(Utility)
[主观题]基数效用(Cardinal utility)
[主观题]总效用(Total utility)
[名词解释] 基数效用(Cardinal utility)
[名词解释] 总效用(Total utility)
[名词解释] 边际效用( Marginal utility)
[问答题] 总效用TU (Total Utility)
[主观题]D.iminishing marginal utility,law of 边际效用递减规律