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Which of the following problems will occur if the internal drain at either end of a hydraulic, two-way, spool-type directional control valve cylinder were to become plugged?（）
A . The reservoir would become vapor bound
B . The valve would be placed in hydraulic lock
C . The spring loaded relief ports would open
D . The buffering chambers would be unable to functio
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If the bill of lading contains the words weight and quantity unknown，the shipper must（）that the goods were in fact shipped to succeed in an action for non-deli-very.
A . show
B . make
C . get
D . have
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You have used the CROSSCHECK BACKUP command to verify that the backups recorded in the RMAN repository actually exist. Which command should you now use to check if any of the files were missing？（）
A . LIST EXPIRED
B . DELETE EXPIRED
C . DELETE OBSOLETE
D . CHANGE UNCATALOG
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If you were to configure an ISL Ethernet trunk between two Cisco switches， named R1 and R2， what would you have to include at the end of the link for the trunk to operate correctly？ （）
A . An identical VTP mode.
B . An identical speed/duplex.
C . An identical trunk negotiation parameter.
D . An identical trunk encapsulation parameter.
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If you were to pass a stopper on a wire rope，what should the stopper be made of（）.
A . Wire
B . Manila
C . Nylon
D . Chai
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Refer to the exhibit.What two results would occur if the hub were to be replaced with a switch that is configured with one Ethernet VLAN?（）https://assets.asklib.com/images/image2/2018072316420345545.jpg
A . The number of collision domains would decrease.
B . The number of collision domains would increase.
C . The number of broadcast domains would remain the same.
D . The number of collision domains would remain the same.
E . The number of broadcast domains would increase.
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Each person at the reunion was required to talk to other relatives to find out if they would buy one of the histories（）it were printed.
A、 whether
B、 if
C、 when
D、 after
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The jaws of the shark were so huge that we estimated a small craft could be damaged if __________ had the misfortune to encounter the beast in the ocean.
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The word ( ) means \the condition of having more debts (liabilities) than total assets which might be available to pay them, even if the assets were mortgaged or sold\.
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If the French demand for American exports rises at the same time that U.S. productivity rises relative to French productivity, then, in the long run, _________
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4.If they were not bumped, the non-stop flight would take them to Providenciales at （ ）
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Why does the author say that even gold and silver were inconvenient if you had to buy some-thing expensive？ 查看材料
A.Because they are easy to steal.
B.Because they are difficult for people to obtain.
C.Because they are not easy to carry around.
D.Because they themselves are expensive， too.
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If the reserve requirement ratio were equal to 100%, then______.
A．the deposit multiplier would be equal to one
B．total reserves would be equal to required reserves
C．the banking system would not be able to create money
D．all of the above
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The request to censor the art work of criminals, to which the courts sometimes surrender, might be more reasonable if exposure were somehow ______ to the criminals, instead of humbling them.
A．ennobling
B．intriguing
C．beneficial
D．nebulous
E．tangential
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Based on PPP and the quantity theory of money, everything else remaining unchanged, if Japan’s real income rises relative to real income in the U.S., there would be a(n):
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听力原文：At a recent seminar, many participants were worried about the fact that overpopulation may give rise to many social security problems.
What does the statement mean？
A．Many people are concerned about their security.
B．Social security bears no relation to population.
C．Most social security problems are caused by a few people.
D．Too many people may result in social security problems.
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If the Federal Reserve were to adopt the goal of a constant money supply, it could achieve this goal by______.
A．taking the discount rate as the appropriate target for the federal funds rate
B．buying Treasury bills when the interest rate falls and selling them with it rises
C．forbidding banks to hold excess reserves
D．using any or all of its policy tools to offset changes induced by the behavior. of banks and their depositors
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If the reserve requirement ratio were equal to zero, then______.
A．the deposit multiplier would be infinitely large
B．required reserves would be equal to zero
C．the banking system would theoretically be able to create an infinitely large amount of demand deposits
D．all of the above
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If all the viruses on the planet were to disappears global catastrophe would_____,and the natural ecosystems of the earth would collapse in a spectacular crash under burgeoning populations of insects.
A．varnish
B．disperse
C．contaminate
D．ensue
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If we were asked exactly what we were doing a year ago，we should probably have to say that we could not remember. But if we had kept a book and had written in it an account of what we did each day, we should be able to give an answer to the question.
It is the same in history. Many things have been forgotten because we do not have any written account of them. Sometimes men did keep a record of the most important happenings in their country，but often it was destroyed by fire or in a war. Sometimes there was never any written record at all because the people of that time and place did not know how to write. For example, we know a good deal about the people who lived in China 4, 000 years ago, because they could write and leave written records for those who lived after them. But we know almost nothing about the people who lived even 200 years ago in central Africa because they had not learned to write.
Sometimes, of course, even if the people cannot write, they may know something of the past. They have heard about it from older people and often songs and dances and stories have been made about the most important happenings, and these have been sung and acted and told for many generations, for most people are proud to tell what their fathers did in the past. This we may call ？remembered history ” . Some of it has now been written down. It is not so exact or so valuable to us as written history is, because words are much more easily changed when used again and again in speech than when copied in writing. But if there are no written records, such spoken stories are often very helpful.
Which of the following is NOT suggested in the passage？
A.Written history is more reliable.
B.Written records play an important role in learning about history.
C.A written account of our daily activities helps to answer many questions.
D.Where there are no written records, there is no history.
Little is known about the central Africa 200 years ago because ______.A.there was nothing worth writing down at that time
B.people there ignored the importance of keeping a record
C.people there did not know how to write
D.the written records were perhaps destroyed by a fire
“ Remembered history” refers to ______.A.history based on a person’s imagination
B.stories of important happenings passed down from mouth to mouth
C.songs and dances about the most important events.
D.both B and C
“ Remembered history” is regarded as valuable only when ______.A.it is written down
B.No written account is available
C.it proves to be timely
D.People are interested in it
It is suggested that we could have learned more about our past if ancient people had ______.A.kept a written record of every past event
B.burnt their written records in wars
C.told exact stories of the most important happenings
D.made more songs and dances
请帮忙给出每个问题的正确答案和分析，谢谢！
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Everything has two sides. One side of SARS is already clear. It is a deadly disease, which causes fear. There were 2601 cases recorded on the Chinese mainland on April 24, according to government figures. Some 115 people have died and numbers keep rising.
But, there's another side.
SARS is a reminder of how fragile (脆弱的)life can be. Suddenly, it's not just the old people who are thinking about death. Everyone now realizes there might not always be a tomorrow.
Li Ping, a Senior 3 student in Taiyuan, Shanxi Province, came into contact(接触)with a suspected(疑似)SARS patient in mid-April. He was told to stay at home for at least two weeks. "Watching TV about more and more SARS patients dying, ! never knew that death could be so close. Life is Valuable and I am going to treasure every single day." he said.
SARS teaches people to be grateful, not only for their own lives, but also for others. Doctors and nurses, for example, have to spend all their time with infected(被感染的)patients. As a result, more than 20 percent of SARS cases in China are medical workers.
Liu Yu, a Senior 2 student of Beijing No. 5 Middle School, wants to be a doctor when he grows up. "Although they certainly know of the dangers, doctors and nurses remain bravely dedicated(致力于)to saving people's lives. I was deeply moved by what they have done. I think they are real heroes." he said.
SARS also teaches sympathy(同情). The past few weeks have been terrible for Chinese people. But there are far worse things than SARS in this world, such as war, earthquakes and murders. Think of the Iraqis, who have been living terrible lives for 20 years. Think of how the Americans felt on 9. 11.
And finally, SARS offers the chance to grow. All different types of people and government officials are joining together to cope with this difficult time. When this passes, China and its people, will have learned great lessons.
The story of Li Ping is given in this passage mainly to ______.
A．tell us the hardship of life
B．tell us the fragility of life
C．tell the cruelty of SARS
D．tell us the joy of life
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Are you worried by the rising crime rate？ If you are, then you probably know that your house, possessions and persons are increasingly in danger of suffering from the tremendous rise in the cases of burglary and assault. Figures indicate that there is an ever-increasing crime rate but it is only too easy to imagine "it will never happen to me". Unfortunately, statistics show that it really can happen to you and, if you live in a large city, you run twice the risk of being a victim.
Fortunately, there is something definite which you can do. Protect Alarms can help to protect your house with a burglar alarm system which is effective, simple to operate and easily affordable. You must re-member that possessing a burglar alarm is no indication that your house is packed with valuable possessions. It quite simply indicates to unwelcome visitors that yours is one house they will not break into easily, so they carry on to an unprotected house where their hob is made a lot easier.
Send now for our free leaflet telling you how we can protect your house quickly, easily and cheaply. Complete and tear off the slip below and post it to us. Postage is free. Alternatively, televice. It costs nothing to find out about Protect Alarms.
Anyone who takes an interest in the crime rate will, according to the text, be aware that ______ .
A．more burglars are being caught that ever before
B．people have more possessions to worry about nowadays
C．burglars are more at risk that they used to be
D．homes are more likely to be broken into nowadays
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Suppose that there were 25 people who had a reservation price of $500, and the 26th person had a reservation price of $200. What would the equilibrium price be if there were 24 apartments to rent？
A．＄500
B．＄200
C．＄350
D．＄488
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In“If it were not for the rain, the crops would become withered.”the underlined part means closest to“____”.
A.Without the rain
B.Because of the rain
C.Since the rain
D.Despite the rain
