What are the three major functions of the bill of lading?

What are the three major functions of the bill of lading?
【正确答案】：The three major functions of the bill of lading inclade: 1) it serves as a cargo receipt signed by the carrier and issued to the shipper or consignor; 2) it constitutes a contract of carriage between the carrier and the consignor; 3) it is a document of title to the goods,and the legal holder of the bill of lading is the owner of the goods it covers.