单项选择题The disadvantage above mentioned can be overcome by ()

A. combined transport
B. More frequency
C. Fast train
D. More flexible


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1.单项选择题The disadvantages of rail compared with motor carrier are()

A. Cost  
B. Speed   
C. Lost and damage ratios   
D. Transit time and frequency of service

6.单项选择题It is important to note that from the core company’s perspective, the supply chain includes (), upstream supplier and down stream customers.

A.Internal functions
B.External functions
C.Information systems
D.Physical distribution

8.单项选择题()are respectively the dominant transport mode in China and in the United States.

A.Rail and motor
B.Motor and rail
C.Rail and rail
D.Water and rail