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【单选题】
In the United States, the only firms allowed to import cheese are certain trading companies, each of which is allocated the right to import a maximum number of pounds of cheese each year. This is an example of _____.A.
a subsidy
B.
an import quota
C.
a local content requirement
D.
an ad valorem tariff
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【简答题】EPROM是指 。
【单选题】The expenses for becoming a doctor are spent on ______.
A.
schooling and training
B.
practice in a hospital
C.
facilities he or she uses.
D.
education he or she provides
【简答题】EPROM是指______。