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You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）
A . Disable automatic checkpoint tuning.
B . Check the size of the redo log file size and increase the size if it is small.
C . Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.
D . Decrease the number of redo log members if there are more than one redo log members available in each redo log group.
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avoid Layer 2 loops. Which two of the following are most probably the reasons for that preference?（）
A . Information about port roles is sent to all switches.
B . RSTPs that are based on Cisco products require no additional configuration.
C . Features such as UplinkFast and BackboneFast are compatible with RSTP.
D . An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.
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PLS BE INFORMED THAT SUB VSL’S TWO KINDS OF CERTIFICATES HAVE EXPIRED. ONE IS DERATING CERTIFICATE AND THE OTHER IS SAFETY EQUIPMENT CERITFICATE. According to this telex,（）.
A . two certificates have expired
B . two certificates will expire
C . one of the two certificates have expired
D . one of the two certificates will expire
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You are the Exchange administrator of the Xxx Corporation’s Exchange 2010 organization.You have configured a Database Availability Group （DAG） named DAG01.You need to change the replication port used by the DAG.What are two things that you must do？（）
A . Use the Exchange Management Console （EMC） to change the TCP port used for replication.
B . Use the Exchange Management Shell to change the TCP port used for replication.
C . Modify the Windows Firewall exceptions on each member of the DAG to open the replication port.
D . Modify the Windows Firewall exceptions on the witness server of the DAG to open the replication port.
E . Use the Exchange Management Shell to configure the DAG IP address of 0.0.0.0.
F . Use the Exchange Management Shell to change the DAG IP address to 127.0.0.1.
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In today’s practice, with cylinders of equal diameter of bore and equal revolutions, the two-cycle engine delivers a power about 80 percent （） than that of the four-stroke one.
A . greater
B . better
C . smaller
D . le
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The two focuses of the education reforms in the mid-1980s were（）
A . the raising of the standards of teaching and the reform in curriculum
B . the raising of the standards of teaching and learning and the restructuring of the schools
C . the raising of the standards of teaching and the improvement of the standards of learning
D . None of the above
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Some of the fans chased after the singer’s car to catch a _______ of her.
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What are the two distinct sets of economic policies that the government operates?
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___________ of the two books holds the opinion that danger of nuclear war is increasing.
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It was no _____ that his car was seen near the bank at the time of the robbery.
A．coincidence
B．convention
C．certainty
D．complication
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By______is meant the property of having two levels of structures, such that units of the primary level are composed of elements of the secondary level and each of the two levels has its own principles of organization.
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It was no match that his car was seen near the bank at the time of the robbery.
A.coincidence
B.convention
C.certainty
D.complication
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In many cases, salespeople serve two masters: the seller and the buyer, that’s becuase （）.
A．They represent the company to customers. They find and develop new customers and communicate information about the company’s products and services.
B．They sell products by approaching customers, presenting their offerings, answering objections, negotiating prices and terms and closing sales.
C．They have to do this to earn money.
D．None of all
此题为多项选择题。
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Two People，Two Paths You must be familiar with the situation：Dad’s driving，Mum’s telling him where to go.He’s sure that they need to turn left But she says it’s not for another two blocks.Who has the better sense of direction？ Men or women.
They both do, a new study says.but in different ways.Men and women.Canadian researchers have found，have different methods of finding their way.Men look quickly at landmarks(地标)and head off in what they think is the right direction.Women, however, try to picture the whole route in detail and then follow the path in their head.“women tend to be more detailed,”said Edward Cornell.who led the study,“while men tend to be a little bit faster and …a little bit more intuitive(直觉感知的).”
In fact, said Cornell,“sense of direction”isn’t one skill but two.
The first is the“survey method”.This is when you see all area from above, such as a printed map.Y0u can see，for example，where the hospital is，where the church is and that
the supermarket is on its right.
The second skill is the“route method”This is when you use a series of directions.You start from the hospital，then turn left，turn fight，go uphill——and then you see the
supermarket.
Men are more likely to use the survey method while women are more likely to use one route and follow directions.
Both work, and neither is better.
Some scientists insist that these different skills have a long history. They argue it is because of the difference in traditional roles.
In ancient times，young men often went far away with the older men to fish or hunt.The trip took hours or days and covered unfamiliar places.The only way to know where you were was to use the survey method to remember landmarks—them ountains, the lakes and so on.
The women，on the other hand，took young girls out to find fruits and plants.These activities were much closer to home but required learning well-used paths.So, women’s sense of space was based on learning certain routes.
第41题：When finding his way, Dad tends to rely on
A．his intuitive knowledge.
B．his book knowledge．
C．Mum’s assistance.
D．the police’s assistance．
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The speculatior raised by Pertti Peussa is based on a function of the in-car computer that prevents the car exceeding certain speeds when ________.
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It was no______that his car was seen near the bank at the time of the robbery.
A．coincidence
B．convention
C．certainty
D．complication
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It was no ______ that his car was seen near the bank at the time of the robbery.
A．coincidence
B．convention
C．certainty
D．complication
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听力原文：The doctor who’s in charge of the case told him that without surgery his wife would surely die in two months.
(22)
A．He was too sick to live another two months.
B．The doctor advised an operation on his wife.
C．He learned the case from the doctor.
D．The doctor told him the truth about his illness.
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What was the reason that led to the loss of more than half of African main food two years ago？
A．Drought.
B．Toxin in the crop.
C．The mosaic virus.
D．The barren soil.
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The president of the soccer association said that the two best teams might merge in the next month.
A．compete
B．combine
C．reshuffle
D．reconcile
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Scientists have long believed one way to stop the Earth’s atmosphere from warming is by planting more trees. The idea is that more trees will take in or absorb some of the carbon dioxide in the atmosphere. Carbon dioxide is a gas released by cars, factories and other human activities. The gas traps heat in the Earth’s atmosphere, which warms the planet. However, two new studies have found that trees may not be as helpful in reducing carbon dioxide as had been thought.
The first study was done at Duke University in Durham, North Carolina. Researchers pumped extra carbon dioxide into a test area where pine trees were growing. The trees grew thirty-four percent faster during the first three years. However, in time, the trees slowed to about their normal growth rate. The scientists say this is because trees need other nutrients, such as nitrogen.
In the second study, researchers from Duke and Bowdoin College in Brunswick, Maine examined the soil around trees. They discovered that as the leaves broke down into the soil, all the carbon was not trapped in the soil. Much of it was released into the atmosphere as carbon dioxide.
The findings of the two studies were published last month in Nature magazine. They suggest there is limited value in planting trees to reduce the carbon dioxide pollution in the atmosphere.
Forest planting has been a part of negotiations on a world agreement to reduce greenhouse gases that scientists believe cause global warming. The United States, Canada, Japan and some other industrial countries have supported the idea. But this new research suggests the idea is not as effective as environmental activists had thought. Scientist Ram Oren of Duke University led the study on tree growth. He says that earlier estimates on the ability of forests to absorb carbon dioxide were overly hopeful.
Some scientists not involved in the studies say the research provides some of the first evidence on how trees react to carbon dioxide. Other scientists say the research disputes a belief among some coal and power companies. The companies say that rising levels of carbon dioxide in the atmosphere will not create harmful global warming. Instead, they say it will increase forests and other plants.
What is the purpose of this passage？
A．Introduce some new ideas about the relationship between trees and carbon dioxide.
B．Introduce recent condition of global industrial pollution.
C．Call on people to plant more trees to reduce greenhouse gases.
D．Point out that power companies should be responsible for the rising levels of carbon dioxide.
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What will the next decade bring, as we move into a new millennium？ That’s getting harder and harder to predict. Change is coming so fast that some of the most important technologies of the 21st century may now be just a sketch on the drawing board or glimmer in the mind of genius. Then again, the transcendent technologies may be right under our noses on the verge of having as great an impact as the car or telephone.
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For the United States, empirical studies indicate that over the past two decades the cost of international transportation relative to the value of U.S. imports has:
A．Increased
B．Decreased
C．Notchange
D．Noneoftheabove
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A driver wishes to buy gasoline and have her car washed.She finds that the wash costs $3.00 when2 she buys 19 gallons at $ 1.00 each, but that if she buys 20 gallons, the car wash is free.Thus the marginal cost of the twentieth gallon of gas is: ().
A、-$2.00
B、$0.00
C、$1.00
D、$2.00
