假定一个大型开放经济的决策者想提高投资水平而不改变总收入或汇率。

  a．有什么国内货币与财政政策的结合能达到这一目标?

  b．有什么国内货币、财政与贸易政策的结合能达到这一目标?

  c．有什么国内外财政与货币政策的结合能达到这一目标?

  Suppose that policymakers in a large open economy want to raise the level of investment without changing aggregate income or the exchange rate.

  a．Is there any combination of domestic monetary and fiscal policies that would achieve this goal?

  b．Is there any combination of domestic monetary, fiscal, and trade policies that would achieve this goal?

  c．Is there any combination of monetary and fiscal policies at home and abroad that would achieve this goal?