题目内容:
Beforeallowinggoodstobeexported,manycountriesintheworldinsiston( )whichallowsthegoodstobeexportedandacompulsorylegaldocumentforexport.
A.ashipper’scertificate B.amate’sreceipt
C.ablacklistcertificate
D.anexportlicense
参考答案:
答案解析: