单项选择题
A. Enterprises and other organizations engaged in foreign trade only
B. Enterprises and other organizations engaged in domestic trade only
C. Enterprises engaged in the business of inward process only
D. Both A and C
单项选择题 Specific duties are levied （） some physical unit such as dollars per bushel, per kilo, or per metre and ad valorem duties are calculated as a percent of the value of the goods.
单项选择题 We will provide treasury notes （） security for the loan.
单项选择题 大连某中日合资企业委托辽宁省机械设备进出口公司与日本三菱重工签约进口工程机械，并委托大连外运公司代理报关，在填制进口报关单时，“经营单位”一项应为（）。