首页
登录
职称英语
A design for a remotely-controlled fire engine could make long road or rail
A design for a remotely-controlled fire engine could make long road or rail
游客
2025-04-25
31
管理
问题
A design for a remotely-controlled fire engine could make long road or rail tunnels safer. It is the brainchild of an Italian fire safety engineer, who claims that his invention--dubbed Robogat -- could have cut the death toll in the disastrous Mont Blanc tunnel fire in March 1999 which killed 41 people. Most of the people who perished dies within 15 minutes of smoke first being detected. Quick action is needed when fire breaks out in a tunnel. Robogat can travel at about 50 kilometers per hour. The Mont Blanc fire was 5 kilometers from the French end of the tunnel, so a machine could have got there in about six minutes.
The Robogat has been designed and patented by Domenico Piatti of the Naples fire department; it runs on a monorail suspended from the roof of the tunnel, when the Robogat reaches a fire, it plugs into a modified water main running along the tunnel and directs its hoses at the base of the fire. It is capable of pumping 3,000 liters of high-pressure water per minute--about the same rate as that from an airport fire tender. Normal fire engines deliver 500 liters per minute The machine’ s heat-resistant skin is designed to withstand temperatures of up to 1,000~C. Designed to fight fires in tunnels up to 12 kilometers long, the Robogat will be operated from a control centre outside the tunnel. Ideally, tunnels should have a Robogat stationed at each end, allowing fires to be tackled from both sides.
Piatti says that it would be relatively cheap to install the Robogat in new tunnels. With each machine costing around $ 250,000. "That’s not expensive." says Stuart. Jagger, a British fire fighting specialist, who adds, "Fire-fighters normally have to approach the blaze from upwind. People have dies if the ventilation is overwhelmed or someone changes the ventilation. If the robot worked remotely it would be all advantage. But this introduces extra problems: the Robogat would have to feed information about the state of the fire back to its controller, and the sensors, like the rest of the machine, would have to be fire-resistant. Piatti is now looking for financial backing to build a prototype." [br] The Robogat is designed to pump water ______.
选项
A、at a speed of 500 liters a minute
B、almost as fast as an airport tender
C、six times faster than an ordinary fire-engine
D、at a rate of an airport fire tender
答案
D
解析
根据第二段第三句It is capable of pumping 3,000 liters of high-pressure water per minute--about the same rate as that from an airport fire tender,可直接得出答案为选项D。
转载请注明原文地址:https://tihaiku.com/zcyy/4052936.html
相关试题推荐
Afterthesurfaceispolished,adesignis______orpainted.A、incisedB、evicted
Apervasivenegativeattitudeoftheengineerstowardprojectsfundedbyhiscom
Computerizeddesign,advancfedmaterialsandnewtechnologiesarebeingused
Computerizeddesign,advancfedmaterialsandnewtechnologiesarebeingused
Computerizeddesign,advancfedmaterialsandnewtechnologiesarebeingused
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationa
Wearehopingforalargesaleofournewproductsbecausethenewcardesign__
随机试题
你得承认,多媒体不只是一件东西.而是包括许多东西的复杂的组合:硬件、软件和这两者相遇时的界面。不,我们还忘了一件很重要的事情.多媒体还包括你。是的.就是!对
Majordepressiveepisodeshappentowomenearlierthanmen.[br]Peoplewhosuff
Normallyastudentmustattendacertainnumberofcoursesinordertogradu
【B1】[br]【B5】[originaltext]Acaninecoptookearlyretirementafterbossesat
防排烟系统联合试运转与调试的结果(风量及正压),必须符合设计的规定。
词作者甲、曲作者乙、歌手丙均是中国音乐著作权协会的会员。丁的卡拉0K厅里大量使用
由我国演员上演的第一部外国芭蕾舞剧是()A.《天鹅湖》 B.《无益的谨慎》
人民代表大会制度是我国的根本政治制度,是我国的政体。()
有5个正方形如右图叠放。已知每个正方形的边长都是5cm,它们所覆盖住的面积为11
下列关于隐患排查治理时,生产经营单位的主要职责的叙述中错误的是()。A.安
最新回复
(
0
)