题目内容

____ shows the present value of a future benefit or cost.

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A study to determine the cost to restore lost environmental resources is _ _.

Benefit-Cost Ratio = Total benefits + Total costs

A. 对
B. 错

For Cost-Effectiveness the highest cost with the highest value is chosen.

A. 对
B. 错

For Cost-Effectiveness the lowest cost with the highest value is chosen.

A. 对
B. 错