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單項選擇題

（）is the way to deliver goods for different shippers in the same truck, by the most economic route.

A.Joint Distribution
B.United Distribution
C.Multiple Delivery
D.Joint Delivery

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單項選擇題

（）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

單項選擇題

（） is meant to provide facility for customer’s need or inquiry and arrange it.

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

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