In consolidation service， it is usually the consignor who issues to each consignee his bill of lading.

（） transport of goods is the principal means of transport in many countries due to the low threshold infrastructure requirements.

A.rail
B.road
C.sea
D.air

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Customs clearance in the import-export trade is one of the traditional functions of a freight forwarder.Customs clearance measures mainly include （）。

A.declaration
B.document-checking
C.duty- paying
D.cargo-examination

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