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【单选题】
某企业从境外购买用于加工贸易的料件，料件进口后因品质、规格原因退运出境，更换料件后复进口，料件在退运出境，企业在填制出口货物报关单时，“贸易方式”栏应填报：A.
进料料件复出
B.
进料料件退换
C.
直接退运
D.
退运货物
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