有关Google App Engine表述有错误的是（）？

A:在Google的基础架构上运行个人网络应用程序 B:Google App Engine应用程序易于构建和维护 C:根据应用程序访问量和数据存储需要的增长轻松扩展 D:使用Google App Engine，用户还需维护服务器

以下哪一项不属于Google App Engine数据存储支持形式.（）

A:App Engine Datastore B:App Engine SQL C:Google Cloud SQL D:Google Cloud Storage

以下关于“ENGINE CONTROL”指示的说法错误的是（）.

A:当“ENGINE CONTROL”灯亮时，飞机不能派遣放行 B:只有当飞机在地面时，灯才会亮 C:只要EEC发现一个非派遣性故障，灯就亮 D:N2转速必须大于50%，灯才会亮

You’re alone, driving on a deserted stretch of highway. Suddenly you are enclosed by clouds of smoke and steam as the engine-temperature light flashes its red warning. You pull over to the slow lane and switch on the four-way emergency flashers. Then what Should you keep on rolling or get off the road as fast as you can safely do soKnowing what is happening and what to do in a car emergency can save time, money, worry--even your life.So learning how to check your car will help you handle some common car emergencies.
The engine’s bearings must constantly be lubricated (使润滑) by oil that circulates under pressure. When the oil pressure drops too low, the engine begins to self-destruct. The red oil-pressure warning light flashes on. Listen for any knocking, and sign of serious trouble. If the warning light flashes only at highway speeds and goes out at low speeds or while the engine idles, chances are’ the engine is just slightly low on oil. If the light goes on at idle, but goes out when you accelerate, drive slowly to the repair shop. It is a matter of minutes after oil pressure drops that serious engine damage occurs. You could destroy the engine.
The engine temperature warning light signals that the engine is running hotter than normal. Switching on your heater at the first sign of overheating may help delay a boilover--by drawing off some of the excess heat. Reducing speed may also help. If the light goes out, proceed to the nearest service station for help. If too much coolant has been lost, the engine will boil over, surrounding the engine with steam. If this happens, pull completely off the road, stop and wait. Don’t rush out and open the hood (发动机翼) in the steam. Wait until the vapor goes away and the engine metal cools. But remember that this can take a few hours on a hot summer day.

When you find the engine is hotter than normal, you should（）

A:drive to a service station to get a cool engine B:turn off your heater so as to cool down the engine C:switch on the heater as soon as possible D:try to make the engine boil over ______.

When you find the engine is hotter than normal, you should ______.

A:drive to a service station to get a cool engine B:turn off your heater so as to cool down the engine C:switch on the heater as soon as possible D:try to make the engine boil over ______.

What will happen to the engine when oil pressure drops

A:It will be damaged when the engine stops working. B:Very soon it will be severely damaged. C:Serious damage to it is not likely to occur within the first few minutes. D:Damage may occur to the engine when you drive the car at high speed.

A little airplane has given new meaning to the term "going hyper."
The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed of seven times the speed of sound. That’s about 5,000 miles per hour. At this speed, you’d get around the world -- flying along the equator -- in less than 5 hours.
The Hyper-X is an unmanned, experimental aircraft just 12 feet long. It achieves hypersonic speed using a special sort of engine known as a scramjet. It may sound like something from a comic book, but engineers have been experimenting with scramjets since the 1960s.
For an engine to burn fuel and produce energy, it needs oxygen. A jet engine, like those on passenger airplanes, gets oxygen from the air. A rocket engine typically goes faster but has to carry its own supply of oxygen. A scramjet engine goes as fast as a rocket, but it doesn’t have to carry its own oxygen supply. A scramjet’s special design allows it to obtain oxygen from the air that flows through the engine. And it does so without letting the fast-moving air put out the combustion flames. However, a scramjet engine works properly only at speeds greater than five times the speed of sound. A booster rocket carried the Hyper-X to an altitude of about 100,000 feet for its test flight. The aircraft’s record-beating flight lasted just 11 seconds. Although the little plane’s self-powered flight lasted only 11 seconds, that brief journey on March 27 makes a major milestone on the way to a new breed of very fast airplanes, comments Werner J. A. Dahm of the University of Michigan in Ann Arbor. In the future, engineers predict, airplanes equipped with scramjet engines could transport cargo quickly and cheaply to the brink of space. Such hypersonic jets could potentially carry passengers anywhere in the world in just a few hours.
Out of the three experimental Hyper-X aircrafts built for NASA, only one is now left. The agency has plans for another 11-second hypersonic flight, this time at 10 times the speed of the sound.
What kind of an engine did the Hyper-X use

A:A jet engine that gets oxygen from the air. B:A scramjet engine that doesn’t carry its own oxygen supply. C:A rocket engine that carries its own supply of oxygen. D:A jet engine that uses no oxygen.

? ?When it comes to singling out those who have made a difference in all our lives,you cannot overlook Henry Ford. A historian a century from now might well conclude that it was Ford who most influenced all manufacturing, everywhere, even to this day, by introducing a new way to make cars--one, strange to say, that originated in slaughterhouses.
? ?Back in the early 1900’s,slaughterhouses used what could have been called a "disassembly line. "Ford reversed this process to see if it would speed up production of a part of an automobile engine called a magneto. Rather than have each worker completely assemble a magneto, one of its elements was placed on a conveyer, and each worker, as it passed, added another component to it, the same one each time. Professor David of the University of Delaware, an expert on industrial development ,tells what happened:
? ?"The previous day,workers carrying out the entire process had averaged one assembly every 20 minutes. But on that day,on the line,the assembly team averaged one every 13 minutes and 10 seconds per person. "
? ?Within a year,the time had been reduced to five minutes. In 1913,Ford went all the way. Hooked together by ropes, partially assembled vehicles were towed past workers who completed them on piece at a time. It wasn’t long before Ford was turning out several hundred thousand cars a year,a remarkable achievement then. And so efficient and economical was this new system that he cup the price of his cars in half,to $ 260,putting them within reach of all those who, up until that time, could not afford them. Soon, auto makers the world over copied him. In fact, he encouraged them to do so by writing a book about all of his innovations, entitled Today and Tomorrow. The Age of the Automobile has arrived. Today, aided by robots and other forms of automation,everything from toasters to perfumes are made on assembly lines.

A magneto is a technical term for______

A:an automobile B:an engine C:a part of an automobile engine D:an automobile engine

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A magneto is a technical term for

A:an automobile B:an engine C:a part of an automobile engine D:an automobile engine