网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Many types of rock are _____ from volcanoes as solid, fragmentary material.
A
ejected
B
injected
C
propelled
D
flung
参考答案
参考解析
解析：
句意：很多石头都是从火山中喷发出来的固体碎片。eject驱逐，逐出；喷射。inject注射（药液等）；注入。propel推进；激励；驱使。fling（尤指生气地）扔，掷；猛动（身体或身体部位）；粗暴地（向某人）说。
句意：很多石头都是从火山中喷发出来的固体碎片。eject驱逐，逐出；喷射。inject注射（药液等）；注入。propel推进；激励；驱使。fling（尤指生气地）扔，掷；猛动（身体或身体部位）；粗暴地（向某人）说。
更多 “单选题Many types of rock are _____ from volcanoes as solid, fragmentary material.A ejectedB injectedC propelledD flung” 相关考题
考题
Text 3Everyone has heard of the San Andreas fault, which constantly threatens California and the West Coast with earth- quakes. But how many people know about the equally serious New Madrid fault in Missouri.'?Between December of 1811 and February of 1812, three major earthquakes occurred, all centered around the town of New Madrid, Missouri, on the Mississippi River. Property damage was severe.Buildings in the area were almost dest oyed. Whole forests fell at once, and huge cracks opened in the ground, allowing smell of sulfur to filter upward.The Mississippi River itself completely changed character, developing sudden rapids and whirlpools. Several times it changed its course, and once, according to some observers, it actually appeared to run backwards. Few people were killed in the New Madrid earthquakes, probably simply because few people lived in the area in 1811; but the severity of the earth- quakes are shown by the fact that the shock waves rang bells in church towers in Charleston, South Carolina, on the coast. Buildings shook in New York City, and clocks were stopped in Washington D.C. Scientists now know that America's two major faults are essentially different. The San Andreas is a horizontal boundary between two major land masses that are slowly moving in opposite directions. California earthquakes result when the movement of these two masses suddenly lurches forward.The New Madrid fault, on the other hand, is a vertical fault; at some point, possibly hundreds of millions of years ago, rock was pushed up toward the surface, probably by volcanoes under the surface. Suddenly, the volcanoes cooled and the rock collapsed, leaving huge cracks. Even now', the rock continues to settle downwards, and sudden sinking motions trigger earthquakes in the region. The fault itself, a large crack in this layer of rock, with dozens of other cracks that split off from it, extends from northeast Arkansas through Missouri and into southern Illinois.Scientists who have studied the New Madrid fault say there have been numerous smaller quakes in the area since 1811; these smaller quakes indicate that larger ones are probably coming, but rite scientists say they have no method of predicting when a large earthquake will occur.31. This passage is mainly about ______.A) the New Madrid fault in MissouriB) the San Andreas and the New Madrid faultsC) the causes of faultsD) current scientific knowledge about faults
考题
A technician is upgrading an internal IDE drive in a laptop. Which of the following HDD types is thetechnician MOST likely using?()
A.PATAB.SATAC.Solid stateD.RAID
考题
Packages/cartons of frozen cargo should be stowed in a container ______．A.a solid blockB.as a loose stowageC.away from each otherD.separated from each other by planks
考题
共用题干
Older Volcanic EruptionsVolcanoes were more destructive in ancient history,not because they were bigger,but because the carbon dioxide they released wiped out life with greater ease.Paul Wignall from the University of Leeds was investigating the link between volcanic eruptions and mass extinctions.Not all volcanic eruptions killed off large numbers of animals,but all the mass extinctions over the past 300 million years coincided with huge formations of volcanic rock.To his surprise,the older the massive.volcanic eruptions were,the more damage they seemed to do.He calculated the"killing efficiency" for these volcanoes by comparing the proportion of life they killed off with the volume of lava（熔岩）that they produced.He found that size for size,older eruptions were at least 10 times as effective at wiping out life as their more recent rivals.The Permian（二叠纪）extinction,for example,which happened 250 million years ago,is marked by floods of volcanic rock in Siberia that cover an area roughly the size of western Europe.Those volcanoes are thought to have pumped out about 1 0 gigatonnes（十亿吨）of carbon as carbon dioxide.The global warming that followed wiped out 80 percent of all marine genera（种类）at the time,and it took 5 million years for the planet to recover.Yet 60 million years ago,there was another huge amount of volcanic activity and global warming but no mass extinction.Some animals did disappear but things returned to normal within ten thousands of years."The most recent ones hardly have an effect at all,"Wignall says.He ignored the extinction which wiped out the dinosaurs 65 million years ago,because many scientists believe it was primarily caused by the impact of an asteroid（小行星）.He thinks that older volcanoes had more killing power because more recent life forms were better adapted to dealing with increased levels of CO2.Vincent Courtillot,director of the Paris Geophysical InstitUte in France,says that Wignall's idea is provoca- tive.But he says it is incredibly hard to do these sorts of calculations.He points out that the killing power of volcanic eruptions depends on how long they lasted.And it is impossible to tell whether the huge blasts lasted for thousands or millions of years.He also adds that it is difficult to estimate how much lava prehistoric volcanoes produced,and that lava volume may not necessarily correspond to carbon dioxide emissions."Killing efficiency"is calculated by comparing______.A:the span of time volcanoes lastedB:the volume of lava volcanoes producedC:the number of living things volcanoes killed offD:the proportion of life wiped out with the volume of lava
考题
Many painters, rock singers, and street dancers have distinct hair style, ____ to their group.
A. particular
B. essential
C. special
D. peculiar
考题
Together these inventions hugely reduced the cost of blasting rock, drilling tunnels, building canals and many other forms of____work.
A.construction
B.information
C.animation
D.imagination
考题
有Oracle表”cd”，它包含属性”cdcode”，”category”和”cdname”，你要查询category取值为”CLASSIC”或”ROCK”的行，你采用语句（）A、SELECT * FROM cd WHERE category IN （’CLASSIC’，’ROCK’）B、SELECT * FROM cd WHERE category BETWEEN ’CLASSIC’ AND ’ROCK’C、SELECT * FROM cd WHERE category=’CLASSIC’ AND category=’ROCK’D、SELECT * FROM cd WHERE category=’CLASSIC’ OR category=’ROCK’
考题
Which of the following printer types uses thin print pins to transfer ink from a fiber or ribbon？ （）A、impactB、laserC、solid inkD、ink jet
考题
On which of the following hard drive types must Bob, a technician, change the jumper setting to match the motherboard/cabling combination?（）A、SATAB、eSATAC、Solid stateD、PATA
考题
Which of the following media types is considered a solid state?（）A、Thumb driveB、DVD driveC、Blu-Ray driveD、IDE FDD
考题
A customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which of the following questions will provide the information necessary to design the best performing storage solution？（）A、How many web servers will be connected to the database？B、Will the database be run on a Windows solution？C、How many concurrent users will be accessing the database？D、What are the types of transactions run against the database？
考题
单选题A rock and sand structure extending from the bank of the river toward the channel is known as a（）.A
wingdamB
towheadC
cutoffD
landwall
考题
单选题A retail customer has a database application that is accessed by a large number of people through a web interface from multiple remote locations. Which questions will provide the information necessary to design the best performing storage solution of the following？（）A
How many web servers will be connected to the database？B
How many concurrent applications will run against the database？C
How many concurrent users will be accessing the database？D
What are the types of transactions run against the database？
考题
单选题Strainers are commonly used in hydraulic systems to （）.A
protect the pump from fine soluble contaminantsB
prevent solid particles from entering the pumpC
prevent solid particles from entering the filterD
protect the directional control valves
考题
单选题Terry is having lunch at a salad bar. There are two types of lettuce to choose from, as well as three types of tomatoes, and four types of olives. He must also choose whether or not to hare one of the two types of soup on the side. If Terry has decided to hare the salad and soup combo and he picks one type of lettuce, one type of tomato, and one type of olive for his salad, how many total options does he have for his lunch combo?A
9B
11C
24D
48E
54
考题
单选题Which of the listed bearing types is an example of a solid bearing?（）A
Piston wrist pin bushingB
turbine bearingC
Spring bearingD
Diesel engine main bearing
考题
单选题One function provided by a hydraulic accumulator is to（）A
provide an area where air can separate from the oilB
provide an area to separate solid contaminants from the oilC
act as an oil and water separatorD
absorb shocks occurring in the system
考题
单选题Changing from solid to liquid, water takes in heat from all substances near it, and this _____ produces artificial cold surrounding it.A
absorptionB
transitionC
consumptionD
interaction
考题
单选题The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of （）.A
fusionB
vaporizationC
condensationD
sublimation
考题
问答题One of America’s most important export is her modern music. (1) _______American popular music is playing all over the world. It is enjoyed (2) _______by people of all ages in all countries. Because the lyrics are English, (3) _______nevertheless people not speaking English enjoy it. The reasons forits popularity are its fast pace and rhythmic beat. The music has many origins in the United States. Country music,coming from the suburban areas in the southern United States, is one (4) _______source. Country music features simple themes and melodies describingday-to-day situations and the feelings of country people. Many peopleappreciate this music because the emotions expressed by country (5) _______music songs. A second origin of American popular music is the blues. It depicted (6) _______mostly sad feelings reflecting the difficult lives of American blacks. Itis usually played and sung by black musicians, but it is not popular with (7) _______all Americans. Rock music is a newer form of music. This music style, featuringfast and repetitious rhythms, was influenced by the blues and countrymusic. It is first known as rock-and-roll in the 1950s. Since then there (8) _______have been many forms of rock music, hard rock, soft rock, punk rock,disco music and others. Many performers of popular rock music areyoung musicians. American popular music is marketed to a demanding audience.Now popular songs are heard on the radio several times a day. Somesongs become popular all over the world. People hear these songs sing (9) _______in their original English or sometimes translated into other languages.The words may coincide but the enjoyment of the music is universal. (10) _______
考题
单选题Crankshafts of medium speed engines are （） from a single piece of steel.A
unusually solid weldedB
never be solid forgedC
almost invariably solid forgedD
almost invariably be welded
考题
单选题The crankshafts of medium speed engines are almost invariably solid （） from a single piece of steel.A
forgedB
castC
madeD
shrunk
考题
单选题Many types of general cargo are now carried in （）.A
large bagsB
big drumsC
containersD
large cases
考题
单选题The necessity of the segregation of cargoes is determined by（）.A
experience from practiceB
various types of cargoesC
different types of shipsD
personal abilities
热门标签
最新试卷
