The specification of the maximum amounts of commodities which may be imported into a country in a period of time is a______.

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问题 The specification of the maximum amounts of commodities which may be imported into a country in a period of time is a______.

选项 A、tariff
B、quota
C、nontariff barrier
D、voluntary export restriction

答案B

解析 答案为B项。quota“配额”,指对一种商品每年能够进口的数量所施加的限制。Nontariff barrier缩写为NTB,非关税壁垒,指除关税以外的一切法律和行政上的各种直接或间接限制进口的措施,如进口配额制、自动出口限制、进口许可证制、外汇管制、进出口国家垄断、最低限价等。voluntary export restriction“自动出口限制,自愿调节输出”。本题论述的是配额,故选B项。
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