[简答题]executive aircraft

[填空题]Since World War Ⅱ ,an executive aircraft has been an ______ of the Presidency.

[填空题]
Mrs. Bixby,
Boston, Massachusetts,
Dear Madam,
I have been shown in the files of the War Department a statement of the Adjutant General (陆军副官) of Massachusetts that you are the mother of five sons who have died gloriously on the field of battle. I feel how weak and fruitless must be any words of mine which should attempt to beguile (转移注意) you from the grief of a loss so overwhelming. But I cannot refrain from tendering to you the consolation that may be found in the thanks of the Republic they died to save. I pray that our heavenly Father may assuage (缓解) the anguish of your bereavement (丧亲) , and leave you only the cherished memory of the loved and lost, and the solemn pride that must be yours to have laid so costly a sacrifice upon the altar of freedom.

[简答题]short take-off and landing aircraft

[填空题]The Presidents personal aircraft has become a potent symbol of economic and diplomatic power.

[填空题]By now four communications zones for aircraft have gone into action, each of which is covered by one operational satellite and several back-ups.

[简答题]

Because the aircraft industry needs ever-increasing quantities of aluminium plate, new equipment has been designed to automate the making of it. It includes a huge heat-treatment furnace, a crane that lifts hot metal plates without damaging them, and a computer system that can manage the complete flow of work.
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 pl

[填空题]The work done by aircraft mechanics and service technicians and reservation am transportation ticket agents and travel clerks in air transportation are called ______ occupations.

[单项选择] The man stole the aircraft mainly because he wanted to______.
A. destroy the European Central Bank.
B. have an interview with a TV station.
C. circle skyscrapers in downtown Frankfurt.
D. remember the death of a US astronaut.

[填空题]leads the country in the manufacture of aircraft and spare parts.