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In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove
A . Ⅰ only
B . Ⅱ only
C . both Ⅰ and Ⅱ
D . neither Ⅰ nor Ⅱ
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A rescuer can most easily determine whether or not an adult victim has a pulse by checking the pulse at the（）.
A . carotid artery in the neck
B . femoral artery in the groin
C . brachial artery in the arm
D . radial artery in the wrist
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An orifice-check valve placed in a hydraulic system is used to（）
A . regulate the fluid flow in either direction
B . restrict movement of hydraulic fluid in one direction, but allow free movement in the other direction
C . allow free movement of hydraulic fluid in both directions
D . allow a restricted fluid flow in one direction only
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In a diesel engine, when installing new piston rings it is important to check（） Ⅰ.ring gap clearance Ⅱ.side clearance
A . Ⅰ only
B . Ⅱ only
C . both Ⅰ and Ⅱ
D . neither Ⅰnor Ⅱ
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
A . so a height
B . such a height
C . so high
D . such high
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The holding power of an anchor at a given scope of cable increases when the（）.
A . amount of chain lying along the bottom increases
B . length of the catenary is reduced
C . mooring line tension is increased
D . amount of chain lying along the bottom decrease
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When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is （）
A . lagging
B . leading
C . maximum
D . minimum
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When checking the liquid level in a tank, you should position yourself （）.
A . on the windward side of the opening
B . on the leeward side of the opening
C . at a right angle to the wind direction
D . so that the obstruction of your body will protect you from the fume
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A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）
A . feel the high pressure fuel line
B . check the cylinder exhausts for white smoke frequently
C . check the cylinder exhaust temperature
D . isolate each cylinder and inspect the injector
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According to the dialogue, how do we ask for “a much better room” when we deal with check-in?
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What do you think to be the key words in the sentence “They can maintain their heart beat at the normal rate” when you listen to a passage?
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People often said "Look at the foolish man" when they saw the old man taking a walking stick.
A．Right.
B．Wrong.
C．Doesn't say.
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When people have a bath in Japan, they usually use ______.
A．very cold water
B．cold water
C．warm water
D．very hot water
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I was a freshman in college when I met the Whites. They were completely different from my own family. Jane White and I became friends at school, and her family welcomed me like along-lost cousin.
In my family it was always important to place blame when anything bad happened. But the Whites didn't worry about who had done what. Mr. and Mrs. White had six children: three sons and three daughters.
In July, the White sisters and I decided to take a car trip to New York. The two oldest, Sarah and Jane, were college students, and the youngest, Amy had recently got a driver' s license, and was excited about practicing her driving on the trip.
The big sisters let Amy take over. She came to an intersection with a stop sign, but Amy continued without stopping. The driver of a large truck, crashed into our car.
Jane was killed instantly.
When Mr. and Mrs. White arrived at the hospital, they hugged us all.
To both of their daughters, and especially to Amy, over and over they simply said, "We' re so glad that you're alive."
I was astonished. No blame.
Later, I asked the Whites why they never talked about the fact that Amy was driving and had run a stop sign.
Mrs. White said, "Jane's gone, and nothing we say or do will bring her back. But Amy has her whole life ahead of her. How can she lead a full and happy life if she feels we blame her for her sister' s death？"
They were right. Amy graduated from college and got married several years ago, She works as a teacher of learning-disabled students. She' s also a mother of two little girls of her own, the oldest named Jane.
The writer of the article is ______ .
A．Mrs. White's niece
B．the Whites' cousin
C．Sarah' s friend at college
D．Jane' s friend at school
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Why can't they watch a movie at home in the evening？
A．Because Susan's mother will not allow them to watch a movie.
B．Because Susan has to finish her history assignment.
C．Because Susan has to cook for the family.
D．Because Susan's video machine is broken.
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Giussani has arrived at the conclusion that babies in high-altitude regions are more likely to have heart trouble when they grow up.
A．Right
B．Wrong
C．Not mentioned
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Surgeons will soon be able to enter the eye to carry out operations—at least in a virtual sense. Techniques derived from virtual reality the computer system that immerses operations in an artificial computer-generated world—will allow surgeons to feel as if he could see the in side of the eye during an operation, creating the illusion that they are actually there.
Researchers at the Biorobotics (生物机械技术)Laboratory of McGill University in Montreal are building a robot , known as Micro Surgery robot-1(MSR- I for short), that will perform. delicate operations under the control of a human surgeon. The robot is specifically designed for performing eye surgery but could have other applications, such as the removal of brain tumors. The system could also be used to allow surgeons and their students to practise simulated surgery that feel like the real thing- without the real consequences for the patients.
During the operations, the surgeon manipulates a set of control known as the master. These are connected through a high- performance computer to the robot. Both the master and the robot have two limbs, When the surgeon moves the masters' limbs, the robots limbs move in exactly the same way, except that the movements can be scaled down as much as a thousand times. This will eliminate hand tremor and poor accuracy and thus reduce the damage to the eye that can occur with present microsurgery techniques. Each of the robots limbs has a minimum movement of one micrometer---more than one hundred times the precision of the human hand.
The computer also creates a three - dimensional robot' s eye view of the inside of the eye that the surgeon can see by wearing a virtual reality helmet (虚拟现实头盔) that has a small lens in front of each eye.
To provide the surgeon with such a realistic experience, MSR-I must be able to move rapidly, but this requires extremely fast computing. To handle the computational demands of instant interaction, the McGill team is constructing its own parallel-processing computer., It is al so studying areas such as muscle mechanism, artificial intelligence and optics, and has a already built another micro robot MR- I, capable of manipulating a single living cell.
Although commercial applications of the new system are not expected for several years, its basic mechanical components will be ready for testing in a few months, "The day when micro robots will be able to perform. surgery without human intervention is many years away," says Hunter, "in the meantime , a system such as MRS-I is a necessary precursor."
The so-called "virtual reality "mentioned in this passage is actually.
A．a surgical tool used for operations
B．a computer system used to produce life- like illusions
C．a new kind of applications in a visual technology.
D a way to carry out operations in a visual sense
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听力原文：Man: Some of us can remember the days when a visit to the supermarket was no fun. If you needed information, there was never an assistant in sight. And when you did find one, they knew less than you. Well, that time is long past, and the seminar I watched recently at our award- winning supermarket was a revelation. It endeavoured to keep sa[es assistants up-to-date with information about food technology, how to access product information on the store intranet, and so on. And that's what gave this supermarket its edge.
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Despite the general negative findings, it is important to remember that all children who live through a divorce do not behave in the same way. The specific behavior. depends on the child's individual personality, characteristics, age at the time of divorce, and gender. In terms of personality, when compared to those rated as relaxed and easygoing, children described as temperamental and irritable have more difficulty coping with parental divorce, as indeed they have more difficulty adapting to life change in general. Stress, such as that found in disrupted families, seems to impair the ability of temperamental children to adapt to their surroundings, the greater the amount of stress, the less well they adapt. In contrast, a moderate amount of stress may actually help an easygoing, relaxed child learn to cope with adversity.
There is some relationship between age and children's characteristic reaction to divorce. As the child grows older, the greater is the likelihood of a free expression of a variety of complex feelings, an understanding of those feelings, and a realization that the decision to divorce cannot be attributed to any one simple cause Self-blame virtually disappears after the age of 6, fear of abandonment diminishes after the age of 8, and the confusion and fear of the young child is replaced in the older child by shame, anger, and self-reflection. Gender of the child is also a factor that predicts the nature of reaction to divorce, the impact of divorce is initially greater on boys than on girls. They are more aggressive, less compliant, have greater difficulties in interpersonal relationships, and exhibit problem behaviors both at home and at school. Furthermore, the adjustment problems of boys are still noticeable even two years after the divorce.
Girls' adjustment problems are usually internalized rather than acted out, and are often resolved by the second year after the divorce. However, new problems may surface for girls as they enter adolescence and adulthood. How can the relatively greater impact of divorce on boys than on girls be explained？ The greater male aggression and noncompliance may reflect the fact that such behaviors are tolerated and even encouraged in males in our culture more than they are in females. Furthermore, boys may have a particular need for a strong male model of self-control, as well as for a strong disciplinarian parent. Finally, boys are more likely to be exposed to their parents' fights than girls are, and after the breakup, boys are less likely than girls to receive sympathy and support from mothers, teachers, or peers.
Temperamental, irritable kids have difficulty adapting to parental divorce because
A．they care too much about the life change.
B．the great stress of their families diminishes their ability.
C．they tend to lose temper easily and are sensitive to the life change.
D．they are faced with more parents' fights than the relaxed, easygoing children.
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British people live in .
Life in Britain
Homes and families: Many British people live in houses, not flats (公寓). Most houses have gardens.
Daily life: Most office workers start work at about nine in the morning, and finish at about five or six in the afternoon. Most people don't go home for lunch. They just have a quick meal.
School life: Children start school at about 9 a.m. and finish at about 3:30 p.m. Most children have lunch at school. All children go to school when they are six or seven.
Shops: Most shops open at about 9 a.m. and close at 6 p.m. Usually, they don't close for lunch.
A gardensB housesC roomsD flats
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听力原文： An explosion in a Pennsylvania coal mine killed one worker Monday, but five other miners escaped. The blast went off 2,300 feet underground at the R&D coal mine in Schuylkill County. Some officials say it appears a blast went off in the anthracite mine when workers detonated the explosives, but that’s still under investigation.
The process right now is to continue the interviews and then get back down underground and complete the inspections and in that way we can complete the investigation as to what happened.
The brother-in-law of the miner killed says 43-year-old Dlae Reightler worked at the mine since he was a teenager and that he dreamed of moving his wife and four children, setting up an auto-repair business.
He did it all his life. He did that and worked on cars in his garage backyard. He enjoyed doing that stuff.
At the mine, the accident knocked out the ventilation system, making it too dangerous for investigators to go down into the mine shaft. Regulators ordered the facility closed until the investigation is complete. The area has the nation’s only deposits of anthracite, a type of hard, clean burning coal. A June inspection of the site turned up no violations and violations detected in August were fixed on site.
The investigation was dangerous because ______.
A．the mine was badly damaged
B．the ventilation system was broken
C．the mine was too deep
D．the safety facility was destroyed
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In England, people often talk about the weather because they an experience four seasons in one day In the morning the weather is warm just like in spring.An hour later black clouds come and then it rains hard The weather gets a little cold.In the late afternoon the sky will be sunny, the sun will begin to shine, and it will be summer at this time of a day.In England, people can also have summer in winter, or have winter in summer.So in winter they can swim sometimes, and in summer
sometimes they should take warm clothes.When you go to England, you will see that some English people usually take an umbrella or a raincoat with them in the sunny morning.
but you should not laugh at them.If you don't take an umbrella or a rain coat, you will regret later in the day.
6.People in England often talk about the weather，because the sky is sunny all day.()
A.T
B.F
7.From the story we know that when black clouds come，there is a heavy rain.()
A.T
B.F
8.The sentence “People can also have summer in winter.”means “it is sometimes too warm in winter.”()
A.T
B.F
9.In the sunny morning some English people usually take a raincoat or an umbrella with them because their friends ask them to do so.()
A.T
B.F
10.The best title for this passage is Summer or Winter in England.()
A.T
B.F
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A good leader, an effective leader, is one who has respect. Respect is something you have in order to get. A leader who has respect for other people at all levels of an organization, for the work they
