Accordingtoacertaintypeofrate,ashippercannotbechargedlessthantheappropriaterateof4kginmostcases,eventhoughhisparticularconsignmentmayweighlessthanthis,wecallthistypeofrate（）.

()systemconcernsitselfwithshipmentofcontainersoverlandasapartofasea-landorasea-land-searoute.

（）arethedocumentsusedinaircargotransportation.

Procurementisconcernedwithpurchasingandarrangingoutboundmovementofmaterials,parts,and/orfinishedinventoryfromsupplierstocustomers.

TheAirWaybillisthemostimportantdocumentinaircargotransportation.Itservesas（）.