题目内容
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At sea, we usually use() to provide hot water.
A.a heater
B.an exhaust gas boiler
C.an engine
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What do we learn about Japanese trains？
A．People tend to be asleep on the trains.
B．People usually read newspapers there.
C．They always leave and arrive on time.
D．There are always not enough trains.
We learn from the passage that ______.
A．same-sex partners are still strongly looked down upon in UK
B．same-sex partners in England and Wales are granted many of the legal rights enjoyed by married couples of different sexes
C．same-sex partners are usually ashamed of their relationship
D．many "gay marriages" have been declared void by British court
A NVOCC usually operates vessels to provide sea transportation.( )
听力原文： Listening is one of the first things we learn to do, and one of the things we do most. The average person spends 9% of his daily communication time writing, 16% reading, 30% speaking and 45% listening. Students spend most of their school time listening, up to 60% according to some studies. Yet despite its importance, we usually take our ability to listen for granted. As we've already said, though, listening isn't easy. In the first place, we're surrounded by noise: the sound of traffic, the roar of jets overhead, even the start tick on the telephone line, which makes any listening job a challenge. In the second place, we often don't seem to remember even when we do listen, by the time a speaker has finished a ten minutes' speech, the average person has already forgotten half of what was said. Within 48 hours, another fifty percent has been forgotten. In other words, we quickly forget nearly all of what we hear. Unfortunately, the cost of poor listening is high. Poor listening may keep you from doing well on an exam, but it can cost all of us much more. One of the greatest tragedies in the history of sea travel occurred on the night of April 14th, 1912, when the crew of the TITANIC refused to listen to repeated warnings of iceberg. Even after the ship struck an iceberg and was obviously sinking, some of the passengers ignored the captain's orders to get into the lifeboats.
(43)
A．Writing.
B．Reading.
C．Speaking.
D．Listening.
The Mesolithic, or Middle Stone Age, can seem a very remote and "mysterious" time. It started in about 10,000 B.C, as the last Ice Age ended. 62 northem Britainand everything north of this lying under vast ice 63 ,with so much water 64 up in the ice 65 sea levels could be 50m (160ft) _66_ those of today. What we now know as Britain was part of the European landmass in the Mesolithic Age, and was 67 to France and Denmark. And the shallow fishing grounds in the North Sea that are now known as the Dogger Bank were then a huge island.
But as the ice melted and retreated northwards, the seas 68 , just as they are doing today, and the newly shaped lands became covered first in arctic tundra and then in 69 mixed forests. Animals retumed to graze, and with the animals came people.
The people that retumed to these newly 70 lands were not settled farmers, but were hunters and gatherers. It is thought that they must have been 71 on the move in order to survive, searching for wild foods such as nuts and berries, and 72 wild animals for meat and skins. We 73 that since they were so 74 , they lived in temporary structures that were light easily dismantled (拆除) and 75 .
Unfortunately, if this is the case, there are unlikely to be many physical _ 76 for archaeologists to find. So, even though there are a few 77 in Britain and Scandinavia where 78 0f some sort have been found, all 79 can usually be 80 of a site where Mesolithic people lived is a scatter of finely worked and very 81 stone tools.
62.
A.Think
B.Imagine
C.Suppose
D.Presume
Ice draws the Dutch(荷兰人) outdoors with a force as old as their history. Ask anyone there why, and the answer is the same: "Because there is so much water". With one-quarter of the nation below sea level and nearly half its land reclaimed from the sea, the Netherlands has many canals, lakes, rivers and waterways. When winters are cold enough, these freeze into charming avenues for skating and celebrating Dutch culture with traditional events such as races with horse-drawn old-fashioned sleighs(雪撬).
A deep freeze is rare, which adds to the attractiveness. "Our winters are influenced by the Gulf Stream and therefore are rather rainy and not very severe", says Co Rentmeester, who was born in Amsterdam. "But when winter is strong and very cold, the lakes and canals freeze, and the Dutch become Olympians. It's a national passion".
Last winter was strong enough to hold the famous Eleven Cities Tour, a 200-kilometer skating marathon through 11 towns that drew more than 16,000 skaters and haft a million onlookers. Such events give the usually antinationalistic Dutch a chance to cheer their countrymen and their accomplishments. "We can walk on water and see the lands we made with our own hands", says historian Herman Pleij with a laugh. For Dutch skating champion Ria Visser, the attractiveness is more emotional, "To be in nature with the cold and the silence and the wonderful movement of skates, it's like flying. You feel free".
Ice draws the Dutch outdoors with a force as old as their history, which means ______.
A．ice has a long history which forces the Dutch to leave their homes
B．ice is an old force in Dutch history that pushes people to engage in outdoor activities
C．ice-sports have long since been the Dutch favourite outdoor activities
D．ice-sports have long since been the force in Dutch history
A、the sea adventure tales
B、the detective stories
C、the love stories
D、the frontier saga
Where do polar bears usually hunt seals？
A．On land.
B．In open water.
C．In openings in the sea ice.
D．At the bottom of the sea.
第二组
The only attention that heat exchanger should require is to ensure that the heat transfer surfaces remain substantially clean and the flow passages generally clear of obstruction. Indication that undue fouling is occurring is given by a progressive increase in the temperature difference between the two fluids, over a period of time, usually accompanied by a noticeable rise in pressure loss at a given flow.
Fouling on the sea-water side is the most usual cause of deterioration in performance. The method of cleaning the sea water-side surfaces depends on the type of heat exchanger. With shell-and-tube heat exchangers, the removal of the header covers or, m the case of the smaller heat exchangers, the headers themselves, will provide access to the tubes. Obstructions, dirt, scale etc., can then be removed, using the tools provided by the heat exchanger manufacturer. Flushing through with fresh water is recommended before a heat exchanger is returned to service. In some applications, such as piston oil cooling, progressive fouling may take place on the outside of the tubes. Most manufactures recommend a chemical flushing pr6cess to remove this in situ~ without dismantling the heat exchanger.
Plate heat exchangers may be cleaned by unclamping the stack of plates and mechanically cleaning the surface of each plate as recommended by the manufacturers. The plate seals may require replacement from time to time and here the manufacturers&39; instructions should be closely followed
By which of the following indication, can we conclude that the lube oil-sea water heat exchanger is unduly fouled？
A.the heat exchanger lube oil inlet temperature lowering
B.the heat exchanger sea-water outlet pressure rise
C.the heat exchanger temperature difference between lube oil and sea water increasing
D.the heat exchanger pressure difference between sea water inlet and outlet decreasing
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