Sentence completion Complete the sentences below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer. Hoverplane The

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问题 Sentence completion
Complete the sentences below.
Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
Hoverplane
The Hoverplane will be able to travel at a maximum speed of______per hour.
The greatest potential for Hoverplane is as a ferry, travelling between one and two metres above the water at up to 250 kilometres per hour. Its advantages are those of safety and efficiency -safety as it avoids hitting floating or submerged debris and efficiency as it can travel at five times the speed, but at one fifth of the fuel cost of a normal ferry. And plans are being drawn up for a large version, big enough to carry 150 passengers and freight for 2,000 kilometres at over 300 kilometres per hour. Since the Hoverplane can carry a 50% greater payload than a similar sized aircraft, but with a 30% lower fuel consumption, and it needs neither special ports nor runways, the craft should be an attractive economic proposition for operators and promises to be a popular ferry in the 21st century.

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答案250 kilometres

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