NO.PZ2023061903000053
问题如下：
Q. A large country can:
选项：
A.benefit by imposing a tariff.
B.benefit with an export subsidy.
C.not benefit from any trade restriction.
解释：
A is correct. By definition, a large country is big enough to affect the world price of its imports and exports. A large country can benefit by imposing a tariff if its terms of trade improve by enough to outweigh the welfare loss arising from inefficient allocation of resources.
A正确。根据定义，一个大国大到足以影响其进出口商品的世界价格。如果一个大国的贸易条件得到改善，足以抵消资源配置效率低下所造成的福利损失，那么它就可以通过征收关税获益。
解析没看懂，麻烦解释一下这题知识点是什么并如何理解，谢谢！
