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If whilst flying at 30,000ft, the aircraft suddenly depressurizes, the most common symptom experienced by all persons on board would be()
A、Sudden exhalation
B、Sudden inhalation
C、Abdominal pain
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A、Sudden exhalation
B、Sudden inhalation
C、Abdominal pain
第1题
Five years ago, Europe's aircraft industry needed only 8,000 tonnes of aluminium plate a year for its products. Last year the figure reached 21,800 tonnes. By 2004 it should total 30,000 tonnes. Each airliner contains 180 tonnes of it. That is why the plant is being rebuilt to increase both the quality and the amount of its product.
Aluminium is alloyed with other metals and cast into ingots, and the surface of the ingots is smoothed off. After pre-heating, it is rolled in a mill that can take 3.75-m-wide slabs. The new equipment can make the process more efficient and can produce a better product. For example, computers control the temperature of the hot plates, the rate at which they pass through the mill, the speed of cooling it with water, and so on.
The new plant can handle twice the throughput of the one that it is replacing, thanks to the completely automated and computerized process.
第2题
In the wake of the September 11, 2001, terrorist attacks in the United States, airport security became the responsibility of the federal government. The United States Congress enacted the Aviation and Transportation Security Act in response to the attacks, which bad exposed a number of weaknesses in airport and airline security. The new law expanded the number of baggage screeners, imposed standards for their training, and made them federal employees for a period of time. Beginning in January 2002, it required that all passenger luggage, including checked luggage, be screened. By the end of 2002, all checked luggage was to he put through special explosives-detecting devices. The law increased the number of armed federal air officials flying on domestic flights and required international airlines to turn over advance copies of their passenger lists to U.S. Customs officials for background checks to screen out suspected terrorists.
(26)
A.Operate metal detectors.
B.Require each passenger to show photo identification.
C.Make a body search by hand.
D.Operate X-ray machines to screen baggage.
第3题
A.the professionals do not pose much of a problem for the stores.
B.some people "simply forget to pay for what they take from the shops".
C.the honest public has to pay higher prices.
D.the third type of shop-lifters are dangerous people.
第4题
A.To carry out military exercises with South Korea.
B.To participate in the war.
C.To carry out military exercises with Japan.
D.To take part in a military show.
第7题
Questions 31 to 35 are based on the following passage:
It isn’t often that an entire industry is symbolized in the figure of a single human being, and such is the case with Canadian aviation and the aircraft industry. The man is the Hon. John A.D.McCurdy, and the life story of this still vigorous, distinguished Canadian is at once and at the same time the thrilling history of aviation’s progress in Canada.
It all began one cold February day in 1909 at Baddeck, Nova Scotia, when John McCurdy confounded the critics by flying the Silver Dart, an aircraft designed by himself, for half a mile over the ice of Bras deor Lakes. This was the first po wered flight in Canada and the first by a British subject in the Commonwealth. McCurdy gave proof of his flying ability—and of the development and the use of the aileronby being the first man in the world to execute a figure eight in the air. He became the first to pilot a flying boat, taking off from Long Island Sound. He flew the first airplane to Mexico. In 1911 he had made the longest flight to date, and that over open sea 90 miles from Key West to Havana. He won the first crosscountry race in Canada40 miles from Hamilton to Toronto—and he transmitted the first radio message from aircraft.
When World War Ⅱ came, McCurdy took on board supervisory authority for Canadian aircraft production by serving with the government in various senior positions.Following World War Ⅱ, McCurdy was honored by being made lieutenant governor of Nova Scotia where he made Canada’s first historic flight. He now lives in Montreal with a summer home in Baddeck, site of his first flight.
31.According to the pasage, which of the following statements is NOT true about McCurdy?
A.He was a Canadian.
B.He is regarded as the symbol of Canadian aviation and aircraft industry .
C.He is the first man to finish a figure eight in the air.
D.He now lives in Baddeck.
32.The “Silver Dart” is ____.
A.the name of a weapon
B.a plane bought by McCurdy
C.the nickname of a famous Canadian pilot
D.a plane designed by McCurdy
33.McCurdy is NOT the first one to ____.
A.fly in Canada B.pilot a flying boat
C.fly from Key West to Toronto D.fly to Mexico
34.Nowadays, McCurdy ____.
A.lives in Montreal in summer
B.is the lieutenant governor of Nova Scotia
C.is still very active and energetic
D.is the government’s counsellor
35.The best title for this passage is ____.
A.How McCurdy Became a Famous Canadian Pilot
B.McCurdy’s Legendary Experience
C.McCurdy and the Canandian Aviation
D.McCurdy—the Symbol of American Aviation and the Aircraft Industry
第8题
第9题
Steel lightly covered with concrete is the main structural component of the towers and steel loses a lot of structural strength when heated to 1,100 degrees Centigrade and beyond, as it was. To shield the steel the towers beams(柱梁) were c0ated with a few centimeters of concrete. That insulation was to provide structural integrity for at least 1 hour of fire. The towers met that test. The south tower lasted 62 minutes. The north, 103 minutes. Tragedy followed when not all could escape prior to the collapse.
Most experts agree that the Twin Towers were very. well designed. Many also agree that the pan pie planning the attacks were very knowledgeable and aimed the aircraft at a height that would effect the most damage. The aircraft crash and the resulting fuel fed fires were aimed at about the 90th floor. That was just high enough to insure that the upper floors would weaken with the heat and crack down, dropping into the remaining part of the building. The mass of the falling top floors created such a falling load that some experts estimate it exceeded by 5 to 10 times normal bearing loads. The effect was like a giant hammer, each floor contributing more weight to be born by the next floor down.
Were the Trade Towers well designed? Engineers say yes. But, the public refers to the belief that architects will never again design a tall building without considering the effects of terrorist attacks of all potential kinds. That not only includes the ability of the structure to withstand attack but the means to allow the buildings occupants(居住者) to escape in time to survive.
According to the article, those who designed the tower could have done better if ______.
A.the tower lasted longer after being attacked
B.the tower hold stable until all of the people there managed to escape
C.the tower can be immune to such attacks
D.they considered more about the effects of the very' high temperatures and make duel changes in the structure
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