单项选择题

In comparison to rail and highway, water transport is

A．greater than that of railway with respect to fixed cost
B．the middle with respect to fixed cost
C．quicker than that of rail and highway
D．to transport small tonnage at low variable cost

<上一题目录下一题>

热门试题

单项选择题

According to the passage, diesel-towed barges differ from deep-water vessels in that they ______.

A．are less restricted in operation
B．are larger shipments
C．are less flexible
D．are most flexible

单项选择题

Why is it difficult to say exactly how many miles of improved waterways are in operation

A．The most recent figures is for 1975 and the figure is declining.
B．Water transport's market there goes up and down frequently.
C．So few miles of inland waterways exist that no one has bothered to count them.
D．You must know whether to include coastwise and intercostals shipping in the figure.