题目内容
（请给出正确答案）
Compressed air is used on board ship _____.
A.for starting diesel engines
B.in pneumatic control system
C.in pneumatic tools
D.All the above are true
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更多“Compressed air is used on boar…”相关的问题
What is the function of an air receiver in the compressed air system on a ship？
A.Condenses moisture
B.Provides overpressure protection
C.Purifies the air
D.Acts as an accumulator
A.excessively
B.distinctly
C.approximately
D.lterally
Air pollution is the most serious kind of pollution because ______.
A．it's bad for all living things in the world
B．it makes much noise
C．it makes our rivers and lakes dirty
D．it makes us angry more easily
Read carefully the following excerpt and then write your response in NO LESS THAN 200 words, in which you should: ●summarize the main message of the excerpt, and then ●comment on whether our brains will get lazy in a world run by intelligent machines. You can support yourself with information from the excerpt. Marks will be awarded for content relevance, content sufficiency, organization and language quality. Failure to follow the above instructions may result in a loss of marks. With intelligent machines to do the thinking, will our brains get lazy？ Changing technology stimulates the brain and increases intelligence. But that may only be true if the technology challenges us. In a world run by intelligent machines, our lives could get a lot simpler. Would that make us less intelligent？ Artificial intelligence is taking over many human jobs. For instance, planes are being flown much of the time by automatic pilots. And the complex problem of controlling air traffic around large modern airports is also achieved by artificial intelligence that operates well beyond the capacity of mere human air traffic controllers. As machines get smarter, they will do more of our thinking for us and make life easier. In the future, the electronic assistant will develop to the point that it serves similar functions as a real living butler, fulfilling requests such as: “Organize a dinner party for six on Thursday, Jeeves, and invite the usual guests.” At that point, our long struggle with challenging technologies is at an end. Like Be Wooster, we can take it easy knowing that the hard work of planning and organizing is being done by a better brain-the electronic assistant. Starved of mental effort, our brains will regress.
阅读理解：判断题
A passenger told an air hostess that he needed a cup of water to take his medicine when the plane just took off. She told him that she would bring him the water in ten minutes.
The air hostess was kept so busy that she forgot to give him the water. As a result, the passenger was held up to take his medicine. Thirty minutes later, when the passenger's ring for service sounded, she hurried over to him with a cup of water, but he refused.
In the following hours on the plane, each time the air hostess passed by the passenger, she would ask him with a smile whether he needed help or not. But the passenger never answered a word.
When he was going to get off the plane, the passenger asked the air hostess to hand him the passengers' booklet. She was very sad. She knew that he would write down sharp words, but with a smile she handed it to him.
Off the plane, she opened the booklet, and smiled, for the passenger put it. “On the flight, you asked me whether I needed help or not for twelve times in all. How can I refuse your twelve sincere smiles？”
That's right! Who can refuse twelve sincere smiles from a person？
操作提示：句子正确选择下拉选项框为“T”;句子错误选择下拉选项框为“F”。
* A passenger wants a cup of water because he is thirsty. {T、F}
* The air hostess forgot to give him the water on purpose. {T、F}
* The passenger refused the cup of water. {T、F}
* The passenger didn't write down any sharp words. {T、F}
* This passage tells us that a sincere smile is of no use. {T、F}
[A] compressed [B] impressed [C] obsessed [D] repressed
The sun is one of the stars.Some planets are balls of rock and some are balls of gas.We live on the planet earth.The earth spins around once every day to give us day and night.The earth goes around the sun once every year to give us different seasons.
There are eight planets moving around the sun.We call the family of the sun and its planets the solar system.Mercury is the nearest to the sun, so it is very hot.It is the smallest planet.Venus is very bright and hot.It is the nearest to the earth.Mars is covered with orange-red desi and rocks, so it looks like a red star in the sky.It has seasons like the earth.Jupiter has more than 16 moons (卫星)and it is the biggest and heaviest planet.Saturn has more than 22 moons.The other planets, such as Uranus and Neptune, are all very far from the sun and very cold.We need a telescope (望远镜) to see them.
(1)The sun can give us().
A.heat and water
B.heat and light
C.light and air
D.rock and water
(2)The Chinese meaning of "spin around" is().
A.飞行
B.行驶
C.环绕
D.旋转
(3)The earth goes around()once every year to give us different seasons.
A.the moon
B.Mars
C.Jupiter
D.the sun
(4)Mars looks red in the sky because().
A.it is covered with orange- red dust and rocks
B.it has seasons like the earth
C.it is the nearest to the earth
D.it is covered with red water and dust
(5)Which is NOT true according to the passage？ ()
A.Jupiter is the biggest and heaviest planet.
B.Uranus is very far from the sun and very cold.
C.The revolution(公转) of the earth gives us different seasons.
D.We call the family of the sun and its planets the Milky Way.
根据下面内容，回答题：
Earth is the only 21 we know of in the universe that can support human life.22 human activities are making the planet less fit to live on. As the western world 23 on consuming two-thirds of the world" s resources while half of the world" s population do so 24 to stay alive we are rapidly destroying the 25 resource we have by which all people can survive and prosper.
Everywhere fertile soil is 26 built on or washed into the sea. Renewable resources are exploited so much that they will never be able to recover 27 We discharge pollutants 28 the atmosphere without any thought of the consequences. As a 29 the planet" s ability to support people is being 30 at the very time when rising human numbers and consumption are 31 increasingly heavy demands on it. The Earth" s 32 resources are there for us to use. We need food， water， air， energy， medicines， warmth， shelter and minerals to 33 us fed， comfortable， healthy and active. If we are sensible in how we use the resources they will 34 indefinitely. But if we use them wastefully and excessively they will soon run 35 and everyone will suffer.
材料题请点击右侧查看材料问题 查看材料
A.situation
B.place
C.position
D.site
Our skins let us know whether the air is moist or dry, whether surfaces are wet without being sticky or slippery. From the uniformity of slight pressure, we can be aware how deeply a finger is thrust into water at body temperature, even if the Anger is enclosed in a rubber glove that keeps the skin completely dry. Many other animals, with highly sensitive skins, appear to be able to learn still more about their environment. Often they do so without employing any of the five senses.
By observing the capabilities of other members of the animal kingdom, we come to realize that a human being has far more possibilities than are utilized. We neglect ever so many of our senses in concentrating on the five major ones. At the same time, a comparison between animals and man draws attention to the limitation of each sense. The part of the spectrum (光谱) seen by colour-conscious man as red is non-existent for honey-bees. But a bee can see far more in flowers than we, because the ultra-violet (紫外线) to which our eyes are blind is a stimulating (刺激的) part of the insect's spectrum, and, for honey-bees at least, constitutes a separate colour.
From the passage we realize that ______.
A．man possesses far more senses than the five major ones
B．man possesses a few more senses than animals
C．man possesses as many senses as animals
D．man has fully utilized his senses
A sonic boom is like every sound in that it is ______.
A．explosive
B．caused by compressed tar
C．a pressure disturbance
D．shock wave
