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参照完整性是对外码的约束
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in air cargo transportation, the freight cost must be paid in advance, otherwise the carrier has right to reject the shipment.
The pricing of international air freight is governed by the IATA via the TACT,and the air carriers worldwide are required to use the rates and charges specified in TACT.()2015
in international air cargo transportation, Specific Commodity Rates are usually lower than General Cargo Rates.
in international air cargo transportation, Specific Commdity Rates are a further supplement to the General Cargo Rates tariff, and are applied by most airlines.().
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