单选题If you()a magnet-needle, its two ends can point North and South, and so it can be used to determine directions.AovertakeBfixChighlightDsuspend

单选题
If you()a magnet-needle, its two ends can point North and South, and so it can be used to determine directions.
A

overtake

B

fix

C

highlight

D

suspend


参考解析

解析: 暂无解析

相关考题:

If the aim of activity is to check that students can use the verbs correctly, you have to correct any major errors, especially those involving the verbs you have taught, or the activity will lose its point. ()此题为判断题(对,错)。

Some of you may have finished unitone, _______, you can move onto unit two. A、if you mayB、if you doC、if notD、if so

Curiosity is not only a possible motivation, it is also a great help in your learning languages. Remember that a language is not 11 a grammatical system. It is the 12 of a certain culture of different cultures. It is no good 13 strings of words and lists of grammatical rules 14 you know as much as possible about the background of the language, so that you can understand the ideas conveyed and the references made, as well as the inferences which can 15 the information clearly given. So learn as much as you can about the different cultures which 16 English-watch television programs, listen to the radio, try to obtain 17 and magazines written by native speakers, look at advertisements, and, above all, read-not textbooks, 18 novels, poems and plays. They will show you how a language is 19 used. The English language is a living form. of expression which derives much of its 20 from the context, and much of its effect from a whole network of extra-linguistic knowledge.11.A. just B. even C. so D. that

Some of you may have finished unit one. _____ , you can go on to unit two.A. If you mayB. If you doC. If notD. If so

Currently 94% of Web users use either Internet Explorer or Firefox, but recently some new(71) have been developed that are beginning to attract attention. The browser Opera is becoming very(72) because of its speed, it is currently the world's fastest browser, and because it is much smaller(73) existing browsers (it can almost fit on a single diskette). It can also(74) the last Web page you visited, so the next time you surf, you can start where you left off. And like the big two, you can get it for free; the catch is that you have to watch blinking ads in one comer, or pay $40 for the ad-free (75) of Opera.A.readersB.machinesC.techniquesD.browsers

CAN YOU BEACH means ______.A.can you go to the beachB.can you run the vessel upon a beach to prevent its sinking in deep waterC.can you handle the vessel along the beachD.can berth along the beach

If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you, what winds can you expect in the Southern Hemisphere? ______.A.South-southwesterlyB.North-northwesterlyC.South-southeasterlyD.North-northeasterly

共用题干The Northern LightsThe Sun is stormy and has its own kind of weather It is so hot and active that even the Sun's gravity cannot hold its atmosphere in check!Energy flows away from the Sun toward the Earth in a stream of electrified particles that move at speeds around a million miles per hour. These particles are called plasma,and the stream of plasma coming from the Sun is called the solar wind. The more active the Sun,the stronger the solar wind.The solar wind constantly streams toward the Earth,but don't worry because a protective magnetic field surrounds our planet.The same magnetic field that makes your compass point north also steers the particles from the Sun to the north and south poles.The charged particles become trapped in magnetic belts around the Earth. When a large blast of solar wind crashes into the Earth's magnetic field,the magnetic field first gets squeezed and then the magnetic field lines break and reconnect.The breaking and reconnecting of the magnetic field lines can cause atomic particles called electrons trapped in the belts to fall into the Earth's atmosphere at the poles. As the electrons fall to the Earth,they collide with gas molecules in the atmosphere,creating flashes of light in the sky. Each atmospheric gas glows a different color. Oxygen and nitrogen glows red and green and nitrogen glows violet-purple. As these various colors glow and dance in the night sky,they create the Northern Lights and the Southern Lights.Watching auroras is fun and exciting,but normally you can only see them in places far north like Alaska and Canada. The movement of the aurora across the sky is usually slow enough to easily follow with your eyes but they can also pulsate,flicker,or even move like waves.During solar maximum,auroras are seen as far south as Florida,even Mexico!Auroras often seem to be very close to the ground,but the lowest aurora is still about 100 kilometers above the ground,a distance much higher than clouds are formed or airplanes can fly. A typical aurora band can be thousands of kilometers long,a few hundred kilometers high,but only a few hundred meters thick.We hope you are able to travel to far north places like the Arctic Circle and see the Northern Lights at least once during your lifetime. We know you will never forget it!You cannot see the Northern Lights unless you are in Alaska or Canada.A: RightB: WrongC: Not mentioned

If you really understood the difficulties facing the government,you wouldn’t be so critical( )its spending reductions.of

Currently 94% of Web users use either Internet Explorer or Firefox, but recently some new (71) have been developed that are beginning to attract attention. The browser Opera is becoming very(72)because of its speed, it is currently the world’s fastest browser, and because it is much smaller(73) existing browsers (it can almost fit on a single diskette). It can also (74)the last Web page you visited, so the next time you surf, you can start where you left off. And like the big two, you can get it for free; the catch is that you have to watch blinking ads in one corner, or pay $40 for the ad-free (75) of Opera.A.think B.readC.write D.remember

Currently 94% of Web users use either Internet Explorer or Firefox, but recently some new (71) have been developed that are beginning to attract attention. The browser Opera is becoming very(72)because of its speed, it is currently the world’s fastest browser, and because it is much smaller(73) existing browsers (it can almost fit on a single diskette). It can also (74)the last Web page you visited, so the next time you surf, you can start where you left off. And like the big two, you can get it for free; the catch is that you have to watch blinking ads in one corner, or pay $40 for the ad-free (75) of Opera.A.beyondB.so C.than D.as

共用题干Weight on and off the Earth We are so used to.our life on the surface of the earth that it can be quite an effort for our mind to break free of all the ideas that we take for granted.Because we can feel that things are heavy,we think of "weight"as being a fixed quality in an object,but it is not really fixed at all.If you could take a one-pound packet of butter 4,000 miles out from the earth,it would weigh only a quarter of a pound. Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space?The reason is this:all objects have a natural attraction for all other objects;this is called gravitational attraction.But this power of attraction between two obects gets weaker as they get farther apart.When the butter was at the surface of the earth,it was 4,000 miles from the center.When we took the butter 4,000 miles out,it was 8,000 miles from the center,which is twice the distance.If you double the distance between two objects,their gravitational attraction decreases two times two.If you treble the distance, it gets nine times weaker(three times three)and so on. So this is one of the first things we need to remember that the weight of an object in space is not the same as its weight on the surface of the earth. What about the weight of our pound of butter on the surface of the moon?At the distance the puii of the earth is about 4,000 times smaller than it is here on the surface,so we can forget all about the earth-pull on our butter. On the other hand,on the moon there will be an attraction between the butter and the moon,but the butter will weigh only about one-sixth as much as it does on the earth.This is because the moon is so much smaller than the earth.The amount of gravitational pull that a body produces depends on the amount of material in it.A packet of butter has a gravitational pull of its own;but this is very small in relation to the pull of something as large as the moon,or the earth,or the sun.We do not feel the gravitational pull of a packet of butter becauseA:it is too small to have a gravitational pull of its ownB:its puil is so small that we tend to ignore itC:its pui1 disappears in the presence of the earth's gravitationD:it tends to melt and loses its gravitational puli

The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema. Which two statements are true regarding the outcome of this action? ()(Choose two)A、All the related indexes and views are automatically droppedB、The flashback drop feature can recover only the table structureC、Only the related indexes are dropped whereas views are invalidatedD、The flashback drop feature can recover both the table structure and its data

For which two SQL statements can you use the Flashback Table feature to revert a table to its previous state?()A、UPDATE TABLEB、CREATE CLUSTERC、TRUNCATE TABLED、ALTER TABLE MOVEE、INSERT INTO···VALUESF、ALTER TABLE···DROP COLUMNG、ALTER TABLE···DROP PARTITION

单选题You work as an application developer at Certkiller .com. You are currently in the process of developing a business logic component that requires long calculations. You have identified numerous tasks within this application that can be done asynchronously. You notice that these tasks are mutually dependent and require complex synchronization techniques so that it can manage efficiently. You decide to use Microsoft .NET 2.0 to take advantage of its new thread management features. You need to create and start the application threads. What should you do?()A AB BC CD D

单选题—Can you tell me ______?— With Lucy’s help.Awhen you did it so wellBwhen did you do it so wellChow you did it so wellDhow did you do it so well

单选题A Chinese stopper (two lines) will hold best when you().Afasten the bitter ends to the mooring line with half hitchesBtwist the ends together and hold them in the direction of the pullCtwist the ends together and hold them in the direction opposite to the pullDtwist the ends together and hold them at right angles to the mooring line

多选题You are a Windows Server 2008 systems administrator responsible for configuring the Streaming MediaServices server role. Your organization would like to make numerous human resources training videosavailable for access by its employees. Employees should be able to pause and fast-forward content asneeded. You also want to ensure that users can access the content only while they are connected to your company's LAN. Which actions should you take?()ACreate a new broadcast publishing point.BCreate a new on-demand publishing point.CEnable WMS IP Address Authorization for the publishing point.DEnable WMS Negotiate Authentication for the publishing point.

单选题A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?()AIf the blue ends of the magnets are aft,and the fore-and-aft tray is at the top,you should add some magnets.BIf the blue ends of the magnets are aft you should lower the fore-and-aft trayCIf the blue ends of the magnets are aft,and the fore-and-aft tray is at the top,you should reverse the magnetsDIf the blue ends of the magnets are forward,and the fore-and-aft tray is at the bottom,you should add some magnets

单选题A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°.Which action should be taken to remove this error during compass adjustment().AIf the blue ends of the magnets are aft,and the fore-and-aft tray is at the top,you should add some magnetsBIf the blue ends of the magnets are aft you should lower the fore-and-aft trayCIf the blue ends of the magnets are aft,and the fore-and-aft tray is at the top,you should reverse the magnetsDIf the blue ends of the magnets are forward,and the fore-and-aft tray is at the bottom,you should add some magnets

单选题Why should you back up a duplicated tablespace after a TSPITR is complete?()A The tablespace cannot be duplicated or restored to any point in time after the duplication. B The tablespace cannot be duplicated or restored to the point in time before the duplication. C The entire database cannot be restored after a TSPITR, so a backup is required.D You cannot bring the tablespace online until its been backed up.E There is no requirement to do so, as RMAN will back up the tablespace after the TSPITR.

单选题You can safely step in the bight of a line().Awhen it is not under strainBif both ends are made fastCin an emergencyDat no time

单选题You have only two redo log groups and these groups get overwritten several times in a day. Your database operates in NOARCHIVELOG mode and user/x7fmanaged consistent backups are performed every Sunday night. On Thursday morning, you find that an important table has been dropped and purged.  With reference to this scenario, up to what point in time can the data be recovered?()Auntil Thursday morningBuntil last Sunday’s backupCuntil Wednesday eveningDuntil that point in time when the database is openedEuntil that point in time when the recovery is performedFuntil that point in time when the table is dropped and purged

多选题For which two SQL statements can you use the Flashback Table feature to revert a table to its previous state?()AUPDATE TABLEBCREATE CLUSTERCTRUNCATE TABLEDALTER TABLE MOVEEINSERT INTO···VALUESFALTER TABLE···DROP COLUMNGALTER TABLE···DROP PARTITION

多选题TestKing.com Web site includes a page that customers use to send feedback about the company and its products. You use a SQL Server 2005 database to store the comments in the Comments column of a table named Feedback. You need to implement full-text searching so that you can run reports on the comments. Which two actions should you perform?()ACreate a nonclustered index on the Comments column.BExecute the USE Master Transact-SQL statement.CCreate a full-text catalog.DCreate a full-text index on the Comments column.

单选题—Could you lend me some money, Jack?  —Sorry, Mike. I myself can’t earn enough to ______.Amake the ends meetBmake ends meetCkeep the ends meetDkeep ends meet

问答题Task II (20 marks)  Read the following poem and write an essay in which you discuss its moral and express your personal views.LifeBy Langston HughesLife can be good,Life can be bad,Life is mostly cheerful,But sometimes sad.Life can be dreams,Life can be great thoughts;Life can mean a personSitting in court.Life can be dirty,Life can even be painful;but life is what you make it.So try to make it beautiful.  You should write no less than 160 words. Now write the essay on the Answer Sheet.