当总效用增加时，边际效用应该 - 查题网

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成人高等教育 / 微观经济学（函授）

正确率：100%

当总效用增加时，边际效用应该

A、
为正值，且不断增加
B、
为正值，且不断减少
C、
为负值，且不断增加
D、
为负值，且不断减少

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微观经济学（函授）

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