Broadly speaking, barriers to international trade can be divided into two types: ______ barriers and non-physical barriers.

Generally, trade barriers include______________( ） A: regulatory trade restrictions B: tariffs and quotas C: embargoes D: voluntary restraint agreements

Nowadays the nontariff trade barriers have increased in importance<br/>relative to tariff barriers. ( )

The negative impacts of regional international economic integration include ( ). A: trade transfer B: trade barriers C: investment transfer D: income spillover effect

The negative impacts of regional international economic integration include ( ). A: trade transfer B: trade barriers C: investment transfer D: technology diffusion effect