20 The Harmonized Commodity Description and Coding System (HS) codes are made up of the following,
except _________.
(A) chapters
(B) rates
(C) headings
(D) sections
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統計: A(7), B(38), C(7), D(7), E(0) #2934078
統計: A(7), B(38), C(7), D(7), E(0) #2934078