阿摩線上測驗
4 Most trading countries, including Taiwan, the United States and India, use the Harmonized System (HS)
as the basis of their classifications systems. The first _______ digits of HS codes are a common identifier
across all countries using the HS for that particular good.
(A)4
(B)6
(C)8
(D)10
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統計： A(6), B(60), C(5), D(0), E(0) #2776728
統計： A(6), B(60), C(5), D(0), E(0) #2776728
