Each crank is made up of two crank webs joined by a common _____ to which the bottom end bearing is fitted.A.throwB.crankshaftC.crankpinD.crosshead
The insertion of shims between the foot of a marine type connecting rod and a bearing box would result in __________.A.increased compression ratioB.decreased compression ratioC.increased bearing clearanceD.decreased bearing clearance
In a diesel engine， fuel must be broken up into a spray of fine droplets to （）.A. increase its qualityB. obtain complete burningC. reduce its weightD. all of the above
单句语法填空 ( 本 题共 5 小题 ) 在横线处填入适当的关系词 1 . The gentleman _ you met yesterday proved to be a thief 2.题目不完整3 . I'm deeply impressed by the professors and labs _ I visited in Nanjing University 4 . Why can't you realize the part _ they have played in our life ?5 . The first thing _ should be done is to work out a plan.
_______, high pressure pipe and injectors need to be closely matched to provide optimum fuel injection. A The fuel injection pump B The fuel feed pump C The fuel transfer pump D The fuel booster pump
The world has many beautiful sounds. We can hear the songs of birds and laugh of people. We can listen to cool music and news reports. And all this is due to（归功于） our ears! They bring us a world of sounds. But some people can't hear any sound at all. Some are born deaf. Others can hear well in their childhood， but too many loud sounds hurt their ears later on. In China， 6 children out of 1000 have hearing problems when they are born. They can not hear ordinary sounds clearly. Children who have hearing problems usually also have learning problems at school. A lot of things can cause hearing problems. For example， too much earwax is not good for our hearing and noise louder than 85 decibels（[ˈdesɪbel]分贝） can hurt our ears and make us lose our hearing for a short time or even forever. Hearing is a problem for all of us. So we should do our best to give our ears special care. Don't forget the following： Try to stay away from places with too much noise. If you have to go， wear earplugs（耳塞）. A pair of earplugs can cut the noise by 30 decibels. When swimming， remember to put earplugs into your ears to stop water from getting in. Never put anything sharp into your ears. If you think you have too much earwax， ask your parents to help you clean it out. Keep these things in mind! Then you won't ask "WHAT？" when you are older.（1）In the first paragraph， the writer wants to ____ .A. tell us many beautiful sounds.B. describe the sounds.C. teach us how to use ears.D. show the importance of ears（2）The word earwax means ____ in Chinese.A. 耳膜B. 耳鸣C. 耳垢D. 耳疾（3）Hearing problems may be caused by ____ .A. a little earwaxB. learning problems at schoolC. noise louder than 85 decibelsD. earplugs that can only cut noise by 15 decibels（4）Which of the following is not mentioned in the passage？ ____ A. Hearing problems caused by diseases.B. People with hearing problems.C. Ways to protect our ears.D. Danger of loud noise
Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine byA.natural aspirationB.masked intake valvesC.air ceilsD.scavenging air
No one knows exactly how many disabled people there are in the world，but estimates suggest the figure is over 450million．The number of disabled people in India alone is probably more than double the total population of Canada．In the United Kingdom，about one in ten people have some disability．Disability is not just something that happens to other people：as we get older，many of us will become less mobile，hard of hearing or have falling eyesight．Disablement can take many forms and occur at any time of life．Some people are born with disabilities．Many others become disabled as they get older．There are many progressive disabling diseases．The longer time goes on，the worse they become．Some people are disabled in accidents．Many others may have a period of disability in the form of a mental illness．All are affected by people's attitude towards them．Disabled people face many physical barriers．Next time you go shopping or to work or to visit friends，imagine how you would manage if you could not get up steps，or onto buses and trains．How would you cope if you could not see where you were going or could not hear the traffic？But there are other barriers：prejudice（偏见）can be even harder to break down and ignorance（无知）inevitably represents by far the greatest barrier of all．It is almost impossible for the able-bodied to fully appreciate what the severely disabled go through，so it is important to draw attention to these barriers and show that it is the individual person and their ability，not their disability，which counts．21．The key word in Paragraph 4is ____ ．A．disability B．ignorance C．prejudice D．barriers22．Which of the following statements is NOT true according to the passage？ ____ A．Even the able-bodied may lose some of their body functions when they get older．B．There are about 10percent disabled persons in the UK．C．The whole society should pay due attention to the barriers faced by the disabled people．D．There no longer exists prejudice against the disabled．23．The last word of the passage"counts"most probably means""． ____ A．is most important B．is consideredC．is included D．is numbered24．It can be concluded from the passage that ____ ．A．we should try our best to prevent disablementB．both physical and mental barriers are hard to break downC．we must take a proper attitude towards the disabledD．the able-bodied people will never fully understand the disabled．
After-cooling of a turbocharged diesel engine will result in A. lower torque but higher brake horsepowerB. higher torque but lower brake horsepowerC. lower torque and lower brake horsepowerD. higher torque and higher brake horsepower
Directions: For this part,you are supposed to write a letter of complaint. You should write at least 120 words, and-|||-base your composition on the outline given in Chinese below.-|||-假设你是李华,你在某手机品牌网店中购买了一部手机,但昨天收到货之后你发现该手机已经被人用-|||-过了,里面还存有别人的照片。另外,手机包装零散,并不像承诺的那样包装完好。手机上有刮痕,尺寸也-|||-不是自己想要的。请你写一封投诉信,陈述投诉理由,并要求对方给出解决方案(退款或更换一部新手机)。
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Fill in the blanks with the words given below.Change the form where necessary.Each word can be used only once. budget defy dilemma diverseloyalty manipulate objectivePerspective tackle urge （1）The ____ of the "upright"message is to ask people to save，while the "permissive"message asks people to spend.（2）If you find yourself in a（n） ____ about what is the right decision for your career，speak to a career counselor.（3）It is important for parents to listen to their children's opinion because they may have a very different ____ on the things they've seen.（4）To cater for the different tastes of athletes from all over the world，the organizers of the Beijing Winter Olympics prepared ____ dishes.（5）If you want to save money for a rainy day making a（n） ____ is the first step you may want to take because it gives you a clear plan.（6）The Chinese legend goes that Yue Fei's mother tattooed four Chinese characters on his back to remind him of the importance of ____ to the nation.（7）When children are addicted to online games，they would often ____ their parents and stay online for hours every day.（8）The report goes on to ____ the technicians to take a more active role in developing the standards of artificial intelligence.
The _ of considerable statistics will make it impossible to draw the final decision .A dependence B consequence C presence D absence
Dreams can be a rich source of ___________ for an artist. (inspire)
26 )Could she picture him ___ politics with her father in the drawing -room at her home ？A discussing B. to discuss C.as to discuss D. that discusses
Responsibilities ______becoming a father.A. charge forB. go withC. save forD. go through
ID 89612-|||-We prefer fully __ the plan __ it into execution in a hurry.-|||-OA.discussing.to put-|||-OB.discussing . than put-|||-C.discussing...to putting-|||-O Do ti discuss.than to put
In some families,new adults and kids seem to slip in effortlessly, ____ they have been there all along.A. whileB. thoughC. becauseD. as though
(Walk)______ a long way, Robbins began to feel tired.
Elder and weaker Mr. Mag paid_visits to his old friends. A. scarceB. rare()C. insufficientD. inadequate
The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-cultural communication. Americans, however, have not been well trained in either area and, consequently, have not enjoyed the same level of success in negotiation in an international arena as have their foreign counterparts. Negotiating is the process of communicating back and forth for the purpose of reaching an agreement. It involves persuasion and compromise, but in order to participate in either one, the negotiators must understand the ways in which people are persuaded and how compromise is reached within the culture of the negotiation. In many international business negotiations abroad, Americans are perceived as wealthy and impersonal. It often appears to the foreign negotiator that the American represents a large multi-million-dollar corporation that can afford to pay the price without bargaining further. The American negotiator’s role becomes that of an impersonal supplier of information and cash. In studies of American negotiators abroad, several traits have been identified that may serve to confirm this stereotypical perception, while undermining the negotiator’s position. Two traits in particular that cause cross-cultural misunderstanding are directness and impatience on the part of the American negotiator. Furthermore, American negotiators often insist on realizing short-term goals. Foreign negotiators, on the other hand, may value the relationship established between negotiators and may be willing to invest time in it for long-term benefits. In order to solidify the relationship, they may opt for indirect interactions without regard for the time involved in getting to know the other negotiator. Clearly, perceptions and differences in values affect the outcomes of negotiations and the success of negotiators. For Americans to play a more effective role in international business negotiations, they must put forth more effort to improve cross-cultural understanding. [共5题](1)What kind of manager is needed in present international business and foreign investment? [本题2分]A. The man who represents a large multi-million-dollar corporation. B. The man with knowledge of foreign languages and skills in cross-cultural communication. C. The man who is wealthy and impersonal. D. The man who can negotiate with his foreign counterparts.
21.The language school started a new __ to help young learners with reading and writing.-|||-A.course B.design C.event D.progress
______, there is no one at home. The lights are out.A. EvidentlyB. EvidentC. EvidencedD. Evidence
"There is a senseless concept that children grow up and leave home when they're 18，and the truth is far from that，"says sociologist Larry Bumpass of the University of Wisconsin．Today，unexpected numbers of young adults are living with their parents．"There is a major change in the middle class，"declares sociologist Allan Schnaiberg of Northwestern University，whose son，19，moved back in after an absence of eight months．Analysts list a variety of reasons for this return to the nest．The marriage age is rising，a condition that makes home and its pleasantness particularly attractive to young people．A high divorce rate and a declining remarriage rate are sending economically pressed and emotionally hurt survivors back to parental shelters．For some，the expense of an away-from-home college education has become so extremely great that many students now attend local schools．Even after graduation，young people find their wings clipped（夹住） by skyrocketing housing costs．Living at home，says Knighton，a school teacher，continues to give her security and moral support．Her mother agreed，"It's ridiculous for the kids to pay all that money for rent．It makes sense for kids to stay at home．"But sharing the family home requires adjustments for all．There are the hassles over bathrooms，telephones and privacy．Some families，however，manage the delicate balancing act．But for others，it proves too difficult．Michelle Del Turco，24，has been home three times-and left three times．"What I considered a social drink，my dad considered an alcohol problem，"she explains．"He never liked anyone I dated，so I either had to hide away or meet them at friends'houses．"Just how long should adult children live with their parents before moving on？Most psychologists feel lengthy homecomings are a mistake．Children struggling to establish separate identities，can end up with"a sense of inadequacy，defeat and failure．"And aging parents，who should be enjoying some financial and personal freedom，find themselves stuck with responsibilities．Many agree that brief visits，however，can work beneficially．63．According to the author，there was once a trend （趋势） in the U．S ____ ．A．for middle class young adults to stay with their parents．B．for young adults to get jobs nearby in order to live with their parents．C．for married young adults to move back home after a lengthy absence．D．for young adults to leave their parents and live independently．64．Which of the following does not account for young adults returning to the nest？ ____ A．Young adults find housing costs too high．B．Quite a number of young adults attend local schools．C．Young adults are psychologically and intellectually immature．D．Young adults seek parental comfort and moral support．65．One of the disadvantages of young adults returning to stay with their parents is that ____ ．A．the young adults tend to be overprotected by their parentsB．there will unavoidably be inconveniences in everyday lifeC．most parents find it difficult to keep a bigger family goingD．public opinion is against young adults staying with their parents66．The word"hassles"in the passage （Para.3，Line 4）probably means ____ ．A．agreementsB．worriesC．disadvantagesD．quarrels
The coming of the railways in the 1830s ________ our society and economic life. A. transferredB. transformedC. transportedD. transmitted
Never before in my career _ _ of an assignment A have l frightened B had I frightened C had I been frightened D have I been frightened
（ ）I can’t recall the______, but I did meet her before.A.occasionallyB.occasionalC.occasionD.occasioned
6. The children will now play some pieces of music that they ______ themselves. A.were taught B.composed C.accomplished D.worked7. While she waited,she tried to ______ her mind with pleasant thoughts of the vacation. A.occupy B.compose C.think D.intensify8. In the film,the peaceful life of a monk ______ the violent life of a murderer. A.is compared with B.is compared to C.is contrasted to D.is contrasted with9. ______ to pay for an order is simplicity itself. A.Use plastic B.Using plastics C.Using plastic D.Used plastic10. Additional time is required for cooking or ______ homemade dishes. A.chill B.to chill C.chilled D.chilling
If you _________ in a job for several years, you may be able to accumulate a lot of work experience and skills that would be beneficial to your future career development.A. have worked B. had worked C. have been working D. had been working
Whenever I have trouble ( ) many problems, I ask Jack for help.A. dealing with B. to deal with C. on dealing with D. deal with
These drugs are available over-the-counter without a(n)__________. （）A. infectionB. dosageC. prescription