中国石油大学 / 中石油
正确率:100%
37. As long as there are minor, relative differences in the efficiency of______, even the poor country can have a comparative advantage in producing it.
A、delivering goods
B、improving working conditions
C、transporting raw materials
D、producing a commodity
A、delivering goods
B、improving working conditions
C、transporting raw materials
D、producing a commodity
参考答案:
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