首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one so
Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one so
admin
2011-01-21
43
问题
Petroleum products, such as gasoline, kerosine, home heating oil, residual fuel oil, and lubricating oil, all come from one source — crude oil found below the earth’ s surface, as well as under large bodies of water, from a few hundred feet below the surface to as deep as 25 000 feet into the earth’s interior. Sometimes crude oil is secured by drilling a hole through the earth, but more dry holes are drilled than those generating oil. Pressure at the source or pumping forces crude oil to the surface.
Crude oil wells flow at varying rates, from ten to thousands of barrels per. hour. Petroleum products are always measured in 42-gallon barrels.
Petroleum products are different in physical appearance: thin, thick, transparent or opaque, but their chemical composition is made up of only two elements: carbon and hydrogen, which form compounds called hydrocarbons. Other chemical elements found in union with the hydrocarbons are few and are classified as impurities. Trace elements are also found, but these are of such minute quantities that they are disregarded. The combination of carbon and hydrogen forms many thousands of compounds which are possible because of the various positions and joinings of these two atoms in the hydrocarbon molecule.
The various petroleum products are refined from the crude oil by heating and condensing the vapors. These products are light oils, such as gasoline, kerosine, and distillate oil. The residue remaining after the light oils are distilled is named as heavy or residual fuel oil and is used mostly for burning under boilers. Additional complicated refining processes rearrange the chemical structure of the hydrocarbons to produce other products, some of which are used to upgrade and increase the octane rating of various kinds of gasoline.
Which of the following is NOT true?
选项
A、Crude oil is found below land and water.
B、Crude oil is always found a few hundred feet below the surface.
C、Pumping and pressure force crude oil to the surface.
D、A variety of petroleum products is obtained from crude oil.
答案
B
解析
由文中“from a few hundred feet below the surface to as deep as 25 000 feet into the earth’s interior”可知选项B不正确。
转载请注明原文地址:https://kaotiyun.com/show/K63d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Electricityplaysanessentialpartinourlife.Noonecandenythatelectriclightisnecessaryforpeople’slife.However,ca
Electricityplaysanessentialpartinourlife.Noonecandenythatelectriclightisnecessaryforpeople’slife.However,ca
ManyUnitedStatescompanieshave,unfortunately,madethesearchforlegalprotectionfromimportcompetitionintoamajorline
ManyUnitedStatescompanieshave,unfortunately,madethesearchforlegalprotectionfromimportcompetitionintoamajorline
Thepassageismainlyconcernedwith______oftheUnitedStateshistory?
Thepassageismainlyconcernedwith______oftheUnitedStateshistory?
9.5本题考查考生对于具体数字信息的听辨能力。原句为“...hopingthatbylearninghowthedisordertakesroot,theycanfindwaystokeepitfromgrowinginto
Educationisprimarilytheresponsibilityofthestates.Stateconstitutionssetupcertainstandardsandrulesfortheestablis
Theostrich,thelargestbirdintheworldatpresent,livesinthedrierregionsofAfricaoutsidetheactualdeserts.Because
Treesareusefultomaninthreeveryimportantways:theysupplyhimwithwoodandotherproducts;theygivehimshade;andthe
随机试题
肝体积明显缩小,外观黄绿色,表面呈结节状,光镜下见肝细胞大片坏死,同时可见肝细胞再生结节,明显淤胆,大量炎症细胞浸润,结节间纤维组织及小胆管明显增生,根据上述病变应诊断为
市场分析的基本方式有()。
某工种生产产品的品种单一、变化较小而产量较大时,宜采用()来计算定员人数。
下列情况中,会使测验成绩提高的因素有
∫x2arctanxdx
Therearemanywaysinwhichthephenomenaoflanguageandcultureareintimatelyrelated.Allphenomenaareuniquetohuman
Itisratherimportantforafarmerandanairplanepilottoknow【B1】______theweatherwillbelike.Unlesstheyknowwhatweat
A、Targetthe18to26year-oldagegroup.B、Selltennisrackets.C、Carrymoreathleticshoes.D、Workoutamoreappealingslogan
Fromanutilitarianpointofviewthereisnoneedforclothesto【S1】______.bedecoratedwithtrimmingorembroidery,an
Abirdflu,amassiveearthquake,amonsterstormandaterroristattackareallthreatstomajorcitiesintheU.S.Policemen,
最新回复
(
0
)