Which of the following companies oppose legislation requiring automakers to improve fuel efficiency?

With respect to the concept of the world-system, __________.

A. the semiperiphery acts as a buffer between the core and periphery B. states in the periphery are not active in international trade C. states in the core export light manufactures from the periphery D. there are distinct lines between core and periphery that states cannot cross

If a national currency is convertible, it means that __________.

A. it has flexible values B. it can be exchanged for another currency C. citizens can use several different currencies to purchase domestic goods D. its value floats between upper and lower limits