单项选择题
A. S-B/L ( sea-B/L )
B. V-B/L ( Vessel-B/L )
C. seaway bill
D. Ocean-B/L
单项选择题 （）is the method to keep the best inventory level and position with the minimum cost to satisfy the demand.
单项选择题 （）is the motor carrier service between the different cities domestically.
单项选择题 （）is a logistics center where most inbound goods are the whole truckload most outbound goods are small pieces.