问答题Conventional(普通）computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before thesestorms.
问答题
Conventional(普通）computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before thesestorms.
参考解析
解析：
相关考题：
Ⅲ. Cloze (20 points)Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.We are interested in the weather because it (21) us so directly—what we wear, (22) we do, and even how we feel. Geographers, however, are (23) interested in climate than in weather. Climate is the pattern of all the weather conditions over a long period of time. Generally (24) , climate (25) to these normal weather conditions, not (26) daily or yearly changes.Climate, like weather, changes (27) time. It is true (28) these changes (29) a long time, but not as long as we might expect. Records show that over the centuries large portions of the earth have experienced great changes (30) climate.21. A. effectsB. defectsC. infectsD. affects
Why do we use the weather satellites to take pictures of the atmosphere?Because______．A．the weather satellites can do it easilyB．clouds form. thereC．the weather forms thereD．the pictures can forecast the weather
共用题干Computers in CarsYou're far from home on a lonely road.Shadowy forests stretch away on both sides.A thick mist（雾）makes it difficult to see far beyond your car's windshield（挡风玻璃）.“Can this be route 90A?”you wonder. if it is,you should be near a town.Yet there's no hint of one .Night is closing in.And you're low on gasoline.This is a situation where an in-car computer that can navigate would be a big help.A car computer that navigates?Yes!Such computers exist.Several experimental models are being tested by General Motors,Ford,Chrysler,and several foreign car makers.These computers vary in detail .But they all contain series of maps on videodiscs or videotapes.For example,one computer system contains 13,300 maps covering the continental US.Before starting out on a trip,a driver can type in the code for the region he or she plans to drive through .The computer then shows a map of that region.At the same time,a tiny radio re-ceiver linked to the computer goes to work.It picks up signals from navigation satellites such as the NAVSTAR network.Using these signals,the computer shows the car's position at all times and displays this position on the map.The computer can also calculate and display the best route to follow.A navigation computer may also receive and use data about road construction,weather condi- tions,and traffic jams.This information would be displayed to the driver and the computer would also use the information to work out alternate（交替的）routes.Most cars nowadays also contain computers that help cars run more efficiently .Microproces- sors（微处理机）control certain engine functions by regulating the mixing of fuel. Data on car speed,oil pressure,revolutions per minute,engine temperature,and fuel level can be displayed as digital data(numbers)or warning lights.Some auto designers suggest that a central computer display be used to clearly present such timely information as car speed and fuel level.Warning lights would indicate a drop in oil pres- sure or a sudden rise in engine temperature .To get more information on these conditions,the driver could call it up on the computer display screen.When needed,the computer could be “asked”to provide navigation aid or information about the car's condition. Of the following functions,which is NOT possessed by the navigation computer?A: Showing a map of the region a driver plans to drive through.B: Predicting a car crash on the road.C: Getting information about road construction,weather conditions,and traffic jams.D: Showing the car's position at all times and displaying it on the map.
Computers will become more advanced and they will also become easier to use.Improved speed recognition will make the operation of a computer easier.Virtual reality（虚拟现实）,the technology of（ ）with a computer using all of the human senses,will also contribute to better human and computer（ ）.Other,exotic（奇异的）models of computation are being developed,including biological computing that uses living organisms,molecular computing that uses molecules with particular（ ）,and computing that uses DNA,the basic unit of heredity（遗传）,to store data and carry out operations.These are examples of possible future computational platforms that,so far,are limited in abilities or are strictly（请作答此空）.Scientists investigate them because of the physical limitations of miniaturizing circuits embedded in silicon.There are also（ ）related to heat generated by even the tiniest of transistors.A.empiricalB.realC.practicalD.theoretical
Which of the following best states the author’s attitude toward the information that scholars have gathered about Proust’s writing in 1909？( ) A.The author is disappointed that no new documents have come to light since Fallois’speculations. B.The author is dissatisfied because there are too many gaps and inconsistencies in the drafts. C.The author is confident that Fallois’s 1954 guess has been proved largely correct，but regrets that still more detailed documentation concerning Proust’s transition from the essay to the novel has not emerged. D.The author is satisfied that the facts of Proust’s life in 1909 have been thoroughly established，but believes such documents as drafts and correspondence are only of limited value in a critical assessment of Proust’s writing.
You have two computers named Computer1 and Computer2 that run Windows 7. Computer1 has two localuser accounts named User1 and User2. On Computer1, you run Scanstate.exe /all //server1/data /computer1. On Computer2, you run Loadstate.exe /lac:Pa$$w0rd //server1/data/computer1. You need toensure that User1 and User2 can log on to Computer2. What should you do on Computer2?（）A、Enable all user accounts.B、Modify the default password policy.C、Modify the Allow log on locally user right.D、Add User1 and User2 to the local Administrators group.
You have a computer named Computer1 that runs Windows 7. Computer1 is a member of an ActiveDirectory domain. Remote Desktop is enabled on the computer. You share a folder on Computer1. Youneed to configure Computer1 to meet the following requirements: Allow computers in the local subnet to access the shared folder Prevent computers in remote subnets from accessing the shared folderAllow all computers to connect to Computer1 by using Remote Desktop. What should you do?（）A、Modify the subnet mask.B、Modify the Public folder sharing settings.C、Disable network discovery on all computers located in remote subnets.D、Modify the properties of the File and Printer Sharing firewall exceptions.
Two database users, Jack and Bill, are accessing the SupportCenter STAFF table of the SupportCenter DB database. When Jack modifies a value in the table, the new value is invisible to Bill. Which is the modified value invisible to Bill?（）A、The modified data are not available on disk.B、The modified data have been flushed out from memory.C、The modified rows of the SupportCenter STAFF table have been locked.D、Jack has not committed the changes after modifying the value.E、Both users are accessing the database from two different machines.
You have executed this command to change the size of the database buffer cache： SQL ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command： SQL SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 （4M） Why is the value set to 4194304 and not to 2516582（）A、because 4194304 is the granule sizeB、because 4194304 is the standard block sizeC、because 4194304 is the largest nonstandard block size defined in the databaseD、because 4194304 is the total size of data already available in the database buffer cache
You are the network administrator for Company Inc. Two users named Eric and Julia share a Windows 2000 Professional computer. Eric’s user account is a member of the local Administrators group. Eric needs to share files with Julia. Eric wants Julia to be able to change any of the shared files and to create her own files if necessary. Eric wants to prevent Julia from changing the permissions on files that Eric creates. To accomplish his goal， Eric creates a folder named C:///Data. He changes the NTFS permission on C:///Data to allow his local user account Full Control permissions and to allow Julia’s local user account default permissions. Eric places 10 files in the folder. When Julia logs on to the computer using her local user account and opens a file in C:///Data， she cannot save the changes to the file. Julia also cannot create any new files in the folder. You need to help Eric configure the correct permissions of C:///Data. What should you instruct Eric to do？ （）A、Add Julia’s user account to the local Power Users group.B、Add Julia’s user account to the local Administrators group.C、Allow Julia’s user account Write permissions to C:///Data.D、Allow Julia’s user account Full Control permission to C:///Data.
You upgrade 11 computers in the accounting department from Windows NT Workstation 4.0 to Windows 2000 Professional. All of the upgraded computers are configured to have the default security settings. After the upgrade, users in the accounting department report that they can no longer run any financial or credit applications on their computers. You want all accounting department users to be able to run these applications. You want to allow only the rights that allow users to run the applications. What should you do?（）A、Add each user account to the Power Users group on that user’s computer.B、Configure the financial and credit applications to run as services on the computers in the accounting department.C、Apply the Compatws.inf security template to the local security policy of the computers in the accounting department.D、Use the Computer Management console to configure separate memory spaces for each financial and credit application on the accounting department computers.
You are the desktop administrator for your company. All employees have Windows XP Professional computers. All employees are members of the local Users group on their own computers. A user in the graphics department has a removable disk cartridge drive on his computer. The disk cartridge contains an unsupported, third-party file system. When he tries to save data to the disk cartridge, the user is prompted to reformat the disk cartridge. However, he receives an “access denied” error message when attempting to reformat. You need to enable the user to save data to the disk cartridge. What should you do?（）A、Instruct the user to format the cartridge as FAT32.B、Remove the Read-only attribute from the disk cartridge.C、Add the user to the Power Users local group on the computer.D、Grant the user Allow - Full Control permission on the disk cartridge. E、Configure the local security settings to allow the user to format and eject removable media.
You have a combined Windows 2000 and Windows 98 network that contain sensitive data. You want to utilize as many new Windows 2000 security features as possible. You want to customize a security policy on each computer to ensure that data is kept confidential and secured. Allcomputers must still be able to communicate with each other over the network. What should you do？（）A、Use the security configuration and analysis console to improve the HISECWS security template file.B、Use the local computer policy to disable the access this computer from the network option.C、Use SECEDIT to reconfigure the computer default security settings to not allow anonymous access to the computer.D、Create a policy that excludes write access to the windows 2000 computers then apply the policy to all non-windows 2000 computers.E、None of the above, Windows 9X systems cannot be secured using security template files.
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.14 Things have been changed by the following EXCEPT______.Athe use of radar systems and automated instrumentsBthe use of communication satellites and modern computersCthe joint work of meteorologists and computer scientistsDweather information volume is large enough to compile and analyze
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.12 Nowcasts are_______.Alocal forecastsBshort-range forecastsCmedium-range forecastsDlong-range forecasts
单选题Ten years ago, smaller companies did not use large computers because _____.Athese companies had not enough money to buy such expensive computersBthese computers could not do the work that small computers can do todayCthese computers did not come onto the marketDthese companies did not need to use this new technology
单选题You have two computers named Computer1 and Computer2 that run Windows 7. Computer1 has two localuser accounts named User1 and User2. On Computer1, you run Scanstate.exe /all //server1/data /computer1. On Computer2, you run Loadstate.exe /lac:Pa$$w0rd //server1/data/computer1. You need toensure that User1 and User2 can log on to Computer2. What should you do on Computer2?（）AEnable all user accounts.BModify the default password policy.CModify the Allow log on locally user right.DAdd User1 and User2 to the local Administrators group.
单选题You are the network administrator for Company Inc. Two users named Eric and Julia share a Windows 2000 Professional computer. Eric’s user account is a member of the local Administrators group. Eric needs to share files with Julia. Eric wants Julia to be able to change any of the shared files and to create her own files if necessary. Eric wants to prevent Julia from changing the permissions on files that Eric creates. To accomplish his goal， Eric creates a folder named C:///Data. He changes the NTFS permission on C:///Data to allow his local user account Full Control permissions and to allow Julia’s local user account default permissions. Eric places 10 files in the folder. When Julia logs on to the computer using her local user account and opens a file in C:///Data， she cannot save the changes to the file. Julia also cannot create any new files in the folder. You need to help Eric configure the correct permissions of C:///Data. What should you instruct Eric to do？ （）AAdd Julia’s user account to the local Power Users group.BAdd Julia’s user account to the local Administrators group.CAllow Julia’s user account Write permissions to C:///Data.DAllow Julia’s user account Full Control permission to C:///Data.
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.13 Nowcasts used to be impracticable because______.Athere were no conventional computersBthe cost of the equipping and operating was sky-highCthere were no difficulties in data processingDthere were not enough meteorologists
单选题You have a combined Windows 2000 and Windows 98 network that contain sensitive data. You want to utilize as many new Windows 2000 security features as possible. You want to customize a security policy on each computer to ensure that data is kept confidential and secured. Allcomputers must still be able to communicate with each other over the network. What should you do？（）AUse the security configuration and analysis console to improve the HISECWS security template file.BUse the local computer policy to disable the access this computer from the network option.CUse SECEDIT to reconfigure the computer default security settings to not allow anonymous access to the computer.DCreate a policy that excludes write access to the windows 2000 computers then apply the policy to all non-windows 2000 computers.ENone of the above, Windows 9X systems cannot be secured using security template files.
单选题Two database users, Jack and Bill, are accessing the SupportCenter STAFF table of the SupportCenter DB database. When Jack modifies a value in the table, the new value is invisible to Bill. Which is the modified value invisible to Bill?（）AThe modified data are not available on disk.BThe modified data have been flushed out from memory.CThe modified rows of the SupportCenter STAFF table have been locked.DJack has not committed the changes after modifying the value.EBoth users are accessing the database from two different machines.
单选题The primary purpose of the passage is to _____.Awarn of the dangers of continued burning of fossil fuelsBdiscuss the significance of the amount of carbon dioxide in the atmosphereCdemonstrate the usefulness of mathematical models in predicting long-range climatic changeDdescribe the ways in which various atmospheric and climatic conditions contribute to the Earth’s weather
单选题You are the desktop administrator for your company. All employees have Windows XP Professional computers. All employees are members of the local Users group on their own computers. A user in the graphics department has a removable disk cartridge drive on his computer. The disk cartridge contains an unsupported, third-party file system. When he tries to save data to the disk cartridge, the user is prompted to reformat the disk cartridge. However, he receives an “access denied” error message when attempting to reformat. You need to enable the user to save data to the disk cartridge. What should you do?（）AInstruct the user to format the cartridge as FAT32.BRemove the Read-only attribute from the disk cartridge.CAdd the user to the Power Users local group on the computer.DGrant the user Allow - Full Control permission on the disk cartridge. EConfigure the local security settings to allow the user to format and eject removable media.
单选题You have a computer named Computer1 that runs Windows 7. Computer1 is a member of an ActiveDirectory domain. Remote Desktop is enabled on the computer. You share a folder on Computer1. Youneed to configure Computer1 to meet the following requirements: Allow computers in the local subnet to access the shared folder Prevent computers in remote subnets from accessing the shared folderAllow all computers to connect to Computer1 by using Remote Desktop. What should you do?（）AModify the subnet mask.BModify the Public folder sharing settings.CDisable network discovery on all computers located in remote subnets.DModify the properties of the File and Printer Sharing firewall exceptions.
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.15 The dream of nowcasts will come true when______.Athe cost is loweredBpeople need it to reduce damagesCmeteorologists can make full use of the new technologiesDconventional weather forecasts are got rid of
单选题Nowcasts used to be impracticable because______.Athere were no conventional computersBthe cost of the equipping and operating was sky-highCthere were no difficulties in data processingDthere were not enough meteorologists
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.11 What is the best title of the passage?ASevere Thunderstorms and Damages.BWeather Forecasting and Life-threatening.CScience Advances and Nowcasts.DAvailable Data and Nowcasts.