假设在一个只有两个国家的世界中，影响股票价格的唯一因素是货币政策不可预期的变动。在什么汇率制度下——固定

汇率制还是浮动汇率制——国际资产交易中获得的收益更大一些？

Imagine a world of two countries in which the only causes of fluctuations in stock prices are unexpected shifts in monetary policies．Under which exchange rate regime would you expect the gains from international asset trade to be greater，fixed or floating？