填空题 A—Acquisition cost J—Credit level B—Actual costs K—Customer relationship management C—Arrival notice L—Duty free zone D—Balance of trade M—Electronic commerce E—Bill of lading number N—Free trade zone F—Buyer behavior O—Indirect cost G—Cash conversion cycle P—Minimum weight H—Certificate of origin Q—Net weight I—Chain of customers Examples：(A)购置成本(H)原产地证明

填空题 ( )买方行为( )自由贸易区

填空题 ( )净重( )顾客链

填空题 ( )电子商务( )间接成本

填空题 ( )贸易平衡( )客户关系管理

填空题 ( )免税区( )实际成本