对不起

在固定汇率制和失业条件下,若存在国际收支逆差,运用IS-LM-BP模型说明如何运用宏观经济政策。。

拜托大家了

I think the trade restriction policy is available here. If you have Mankiw's Macroeconomics 5e, Page 329, it says that under fixed exchange rate.restrict the imports will move IS outwards, and induce a move in LM curve, which may eventually result in increase in ouput. And because the fall in imports, the balance of payment will improve and this will also increase the real output.

However, bear in mind that there may be retaliation from other countries.

There may be lots of answers if you go to read Mankiw's Macro economics, the chapter of Mundel/ Flemming effect.