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單項選擇題

How long is the economic distance for motor? （）

A. 750 miles
B. 1000km
C. 1000 miles or less
D. 200 km

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單項選擇題

What are the advantages for motor transportation? （）

A. Door-to-door service
B. Fast
C. Flexibility
D. A and C

單項選擇題

Container is most benefit for （）

A. Transport, carrying, loading and unloading
B. Storage
C. Transporting
D. Distribution