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[单选题]

The hovercraft has an advantage over the airplane_______ the hovercraft can move strai

A.in that

B.for that

C.in which

D.for which

答案
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更多“The hovercraft has an advantage over the airplane_______ the hovercraft can move strai”相关的问题

第1题

Amphibious vehicles, those that can move on both land and water, have been in use for a nu
mber of years, but while most of them were fairly fast on land, they moved quite slowly when they were functioning as boats. The only truly amphibious vehicle that can move with equal ease on both land and water is the hovercraft (气垫船). The hovercraft is the invention of an electronics engineer named Christopher Cockerell. Cockerell's hobby was sailing and he was interested in the problem of reducing the friction of water on the body of a boat, and hit on the idea of designing a boat which would travel on a cushion of air.

The air cushion under a hovercraft is produced by a large fan which blows air downwards between the craft and the water or ground, and so lifts up the craft. The air is main-rained at higher than atmospheric pressure by a flexible rubber "skirt" around the bottom edge of the hovercraft, preventing leakage of air from the cushion. Because the hovercraft floats on the air cushion with no contact between the craft and the surface below, it can travel over flat, rough ground or water with ease.

Hovercraft are usually driven by air screws like propellers (螺旋桨), which face back-wards and "push" the craft forwards, and can be turned to direct the hovercraft. Since there is no propeller dipping below the craft, hovercraft can travel up slopes out of the water, or land on beaches.

Cockerell's Air Cushion Vehicles, or ACVs, are now familiar to everyone and like all inventions, they have been improved upon. British Sea speed hovercraft have been carrying passengers and cars across the English Channel since 1968. They now have a "stretched" version of their Mountbatten Class hovercraft which can carry up to 60 cars and 416 passengers between Britain and France in a little over half an hour.

A new, large-sized hovercraft, designed and built in France, called the Sedam N500 of Naviplane, has now goneinto service. The 155 tonne N500 is 50 metres long (162 feet) and 23 metres wide (76 feet) and can carry 65 cars, plus five coaches, together with 400 passengers. When the sea conditions are ideal the N500 can reach 112 kph (70 mph).

A variation of the hovercraft principle is the sidewall ACV, which is more economical than the flexible skirt models, and easier to control, but it cannot be used on land. The United States Navy have been experimenting with warships based on the sidewall principle, and some of these may well reach a speed of 160kph (100mph).

The hovercraft ______.

A.are moved forward by propellers

B.travel on a cushion of air

C.are lifted up by a flexible rubber "skirt"

D.move faster on land than on water

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第2题

Which of the following is NOT true according to the passage?A.The hovercraft can travel wi

Which of the following is NOT true according to the passage?

A.The hovercraft can travel with ease because there is no contact between the craft and surface below.

B.The sidewall ACV will travel faster than the Sedam N500.

C.A new Mountbatten Class hovercraft can carry more passengers than the Sedam N500.

D.It takes about a half hour to travel between Britain and France by a new Mountbatten Class hovercraft.

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第3题

The biggest hovercraft, which can be used on both land and water, might be ______.A.the si

The biggest hovercraft, which can be used on both land and water, might be ______.

A.the sidewall ACV

B.Mountbatten Class hovercraft

C.Cockerell's ACV

D.Sedam N500

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第4题

The best title of this passage would be ______.A.HovercraftB.The Invention of HovercraftC.

The best title of this passage would be ______.

A.Hovercraft

B.The Invention of Hovercraft

C.The History of Hovercraft

D.The Principle of the Operation of Hovercraft

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第5题

Across the English ChannelTo swim across the English Channel takes at least nine hours. It

Across the English Channel

To swim across the English Channel takes at least nine hours. It's a hard work and it makes you short of breath. To fly over the Channel takes only twenty minutes (as only as you're not held up at the airport), but it's an expensive way to travel. You can travel by hovercraft if you don't mind the noise, and that takes forty minutes. Otherwise you can go by boat, if you dreams of being able to drive to France in his own car. "Not possible", you say. Well, wait a minute. People are once a gain considering the idea of a Channel tunnel or bridge.

This time, the Greater London Council is looking into the possibility of building a Channel link straight to London. A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail ]ink only.

Why is this idea being discussed again? Is Britain becoming more conscious of the need for links with Europe as a result of joining the EEC(欧共体) ? Well, perhaps. The main reason, though, is that a tunnel or bridge would reach the twenty square kilometers of London's disused dock land(船坞地). A link from London to the continent would stimulate trade and re-vitalize(使……重新具有活力) the port, and would make London a main trading center in Europe. With a link over the Channel, you could buy your fish and chips in England and be able to eat them in France while they were stiff warm!

Which of the following statements is TRUE?

A.Swimming across the Channel takes less than four hours.

B.The idea of a Channel tunnel or bridge is a very new one.

C.It is considered to be more difficult to swim across the channel than any other means.

D.A tunnel or bridge would only reach as far as the coast.

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第6题

A.She has to meet a friend.B.She has to fly to Argentina.C.She has to attend a meeting

A.She has to meet a friend.

B.She has to fly to Argentina.

C.She has to attend a meeting.

D.She has to lunch with the man next week.

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第7题

She has no classes in the afternoon.A.TrueB.False

She has no classes in the afternoon.

A.True

B.False

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第8题

A.He is foolish.B.He has a bad memory.C.He has a good memory.D.He is helpful.

A.He is foolish.

B.He has a bad memory.

C.He has a good memory.

D.He is helpful.

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第9题

What has the man done to help?A.He has offered the information.B.He has gone downstairs.C.

What has the man done to help?

A.He has offered the information.

B.He has gone downstairs.

C.He has offered a newspaper.

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第10题

Wal-mart has branches in Mexico.A.YB.NC.NG

Wal-mart has branches in Mexico.

A.Y

B.N

C.NG

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