填空题
A —favorable balance of trade B —special preference
C —transit trade D —tariff harrier
E —inland trade F —inquiry
G —blank endorsed H —customs clearance
I —carrier J —middleman
K —cargo receipt L —shipping order
M —delivery N —import licence
O —unfavorable balance of trade P —partial shipment
Examples: (M) 交货 (J) 中间商