單項(xiàng)選擇題（）is not a physical wall, but a lot of virtual data to protect the computer network.

A.Data wall  
B.Data Channel  
C.Data base  
D.firewall


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1.單項(xiàng)選擇題（） is meant to provide facility for customer’s need or inquiry and arrange it.

A.Service  
B.business  
C.customer service  
D.making money

2.單項(xiàng)選擇題Saving or reducing expenditure in business is （）

A.Save money  
B.Increase cost  
C.cost planning  
D.cost control

3.單項(xiàng)選擇題（）is guaranteed by the full market supply and Just in time ( JIT ) .

A.Zero Inventory logistics  
B.Zero stock 
C.Inventory  
D.Outsourcing inventory

4.單項(xiàng)選擇題（）is more accurate and easier than Fixed Interval System ( FIS ) in the order method.

A.Fixed Quantity System  
B.Fixed Timing System 
C.Fixed Channel System   
D.Double-note system

5.單項(xiàng)選擇題（）has three specific points: fixed line and announcing shipping time in advance.

A.liner transport
B.line ship  
C.line container  
D.line