單項(xiàng)選擇題What is the meaning “cost-effective”? （）

A. cost reduce
B. cost increase
C. effective
D. efficient


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1.單項(xiàng)選擇題What kind of products do the air carriers deliver? （）

A. The high value
B. Low density or weight
C. A and B
D. To add cost

2.單項(xiàng)選擇題（）is the disadvantage for air transportation?

A. Quick but not safe
B. Less frequency
C. It can’t lift heavy goods
D. the highest cost in all transport modes

3.單項(xiàng)選擇題What is the meaning of “short hauls”? （）

A. Near way
B. The distance is not long
C. Direct line
D. Short road

4.單項(xiàng)選擇題Motor transport has the biggest market share in the paragraph. Is it true or not （）

A. Yes
B. Depend
C. Not clear
D. No mention

5.單項(xiàng)選擇題How long is the economic distance for motor? （）

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