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单选题

积雨云在红外云图上为白色,而在可见光云图上为浅灰至灰色,说明云体最有可能()。

A
正在发展
B
刚刚成熟
C
云顶和下部云体脱离,云体瓦解
D
转变为雨层云

答案解析

正确答案:C
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The flight crew does not know that a CFIT accident is happening. But approach and landing accidents are different. The crew can notice many of the problems before the approach and landing accident happens. If the crew notices the problem before an accident, they can do something. If you are aware of the situation and do the right thing to correct the problem, you can prevent an approach and landing accident. The Flight Safety Foundation's Approach and Landing Accident Reduction Taskforce has collected a lot of information on ALA incidents. This information has allowed them to understand many of the things that cause approach and landing accidents. Speed’s creeping, uh, faster Well, the approach is unstable, go around. These things include: ? A badly flown approach; ? Not using the standard procedures for the approach and landing; ? Not understanding where the aircraft is in relation to the ground; and, most importantly, ? Not making a decision to go around before it is too late. You have probably been in one or more of these situations many times during your flying career. Sometimes the crew lands the aircraft safely even with one or more of these problems. But each approach and landing is different. On each one there is a chance that one or more of the ALA problems may cause an accident, as was the case for many crews in earlier accidents. The Flight Safety Foundation's Approach and Landing Accident Reduction effort uses the input of more than 300 industry experts from airlines, government agencies, business aviation companies and aircraft manufacturers. A big part of this effort is to give you tools that help you understand the problems during approach and landing. The solutions and tools in this Module should be used to help you. But you must understand the problems and do the correct things.1. Some words used in first paragraph have a similar meaning to be aware of, except ( ).

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Domestic airline passengers will be able to make phone calls and send e-mails from the sky from next year, a local carrier has said. Shenzhen Airlines said on Monday it has signed an agreement with Geneva-based On-Air to provide passengers with in-flight communications services on all its planes by the end of 2009. The service will be introduced on three aircraft ahead of the 2008 Olympics, on two routes----from Shenzhen to Beijing and Shenzhen to Shanghai, the airline said. Passengers will be able to use their own electronic devices to send e-mails and short messages, make calls and surf the Internet, it said. The service is expected to be of particular interest to business travelers. According to a survey at the end of last year, China had 4.55 million mobile-phone subscribers. Ninety-three percent of those polled said they wished they could send and receive e-mails and messages while on a plane. Despite the introduction of the new service, passengers will still be prevented from using their cell phones and laptops when the plane is taking off and landing, or flying at less than 3,000 m above sea level, the official said. The official said the new service would not lead to an increase in ticket prices, but users of Chinese mobile-phone services will be charged the international roaming rate for any calls made from the sky. Shenzhen Airlines is the first Chinese carrier to provide such in-flight communications services. Its president, Li Kun, said installing the facilities will cost 4.5 million yuan ($596,000) per aircraft. However, the project still needs to be approved by the Civil Aviation Administration of China, a source said.5. It can be inferred that the new service will probably cause( ).

单选题

Domestic airline passengers will be able to make phone calls and send e-mails from the sky from next year, a local carrier has said. Shenzhen Airlines said on Monday it has signed an agreement with Geneva-based On-Air to provide passengers with in-flight communications services on all its planes by the end of 2009. The service will be introduced on three aircraft ahead of the 2008 Olympics, on two routes----from Shenzhen to Beijing and Shenzhen to Shanghai, the airline said. Passengers will be able to use their own electronic devices to send e-mails and short messages, make calls and surf the Internet, it said. The service is expected to be of particular interest to business travelers. According to a survey at the end of last year, China had 4.55 million mobile-phone subscribers. Ninety-three percent of those polled said they wished they could send and receive e-mails and messages while on a plane. Despite the introduction of the new service, passengers will still be prevented from using their cell phones and laptops when the plane is taking off and landing, or flying at less than 3,000 m above sea level, the official said. The official said the new service would not lead to an increase in ticket prices, but users of Chinese mobile-phone services will be charged the international roaming rate for any calls made from the sky. Shenzhen Airlines is the first Chinese carrier to provide such in-flight communications services. Its president, Li Kun, said installing the facilities will cost 4.5 million yuan ($596,000) per aircraft. However, the project still needs to be approved by the Civil Aviation Administration of China, a source said.4. Passengers will still be prevented from using their cell phones in the following situations except( ).

单选题

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单选题

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单选题

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单选题

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单选题

The Boeing 747-400 airplane has reached its cruising altitude of 10,000 meters and cruising speed of 900 km per hour on its way from London to Beijing. The Purser has announced that the passengers are now free to unfasten their seat belts and move around the cabin; however passengers should keep their seat belt fastened when seated. The passenger cabin layout consists of three sections. The 747-400 is unique in having two decks; on the upper deck, behind the flight crew there is the first class section. On the lower deck, at the front, the business class section, for passengers who pay the full fare: while behind is the much larger economy section for passengers who have special cheap rate tickets. The stewards and stewardesses—14 in all—are now busy around the galleys. A choice of drinks, followed by dinner, video entertainment including a film and finally breakfast in the morning is the order of service. Individual headphones are distributed, and these, when plugged in to the arm of the seat—give a variety of in-flight musical programs. Also in the arm of the seat are the controls for a personal reading light, fresh air control and call button. Dinner is served on specially prepared trays, perhaps prawn cocktail, followed by a choice of roast chicken or braised steak with chocolate mousse to finish. The chicken and beef has been heated in the special microwave ovens in the galleys. It is hard to believe that a hot, three-course meal can be served while the plane is flying at this altitude and speed. Dinner over, the cabin lights are dimmed, the blinds by the windows are drawn, the screens unfold and the film begins. Now, for the first time the cabin crew take it in turns to have a rest while the passengers watch the film or snooze dreaming of arriving in Beijing in the morning.3. During the flight, the cabin attendants should do the following except ( ).

单选题

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