首页
登录
职称英语
Petroleum products, such as gasoline, kerosene, home heating oil, residual
Petroleum products, such as gasoline, kerosene, home heating oil, residual
游客
2023-11-19
11
管理
问题
Petroleum products, such as gasoline, kerosene, home heating oil, residual fuel oil, and lubricating oils, 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 producing 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 42-gallon barrels.
Petroleum products vary greatly in physical appearance: thin, thick, transparent or opaque, but regardless, their chemical composition is made up of 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 quantifies 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 the so-called light oils, such as gasoline, kerosene, and distillate oil. The residue remaining after the light oils are distilled is known as heavy or residual fuel oil and is used mostly for burning under boilers. Additional complicated terming processes rear~ range the chemical structure of the hydrocarbons to produce other products, some of which are used to upgrade and increase the octane rating of various types of gasoline. [br] 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
细节题。见第一段第一句话“Crude oil found below the earth’s surface”,即原油在地表以下被发现。
转载请注明原文地址:https://tihaiku.com/zcyy/3199899.html
相关试题推荐
Hewascaught______intheexamination.A、deceivingB、cheatingC、trickingD、swin
[audioFiles]audio_ezfm_0025(20103)[/audioFiles]Therearemanyproductsand
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Inthe1920sdemandforAmericanfarmproductsfell,asEuropeancountries
Inthe1920sdemandforAmericanfarmproductsfell,asEuropeancountries
Cheatingisnothingnew.Buttoday,educatorsandadministratorsarefinding
Cheatingisnothingnew.Buttoday,educatorsandadministratorsarefinding
随机试题
TwinsThesamefactorsthatgiver
Oneofthebestpiecesofmedicalnewstoemergeoverthelastseveralyears
Friday11March2011startedlikeanyotherdayonTwitter.Acelebritystor
有个小朋友排队慢悠悠的被别的小朋友说慢悠悠的,你怎么办?
按调查目的划分,市场调查可分为()。A.探测性调查 B.描述性调查 C.
指令寄存器的位数取决于()。A.存储器的容量 B.指令字长 C.机器字长
下列关于某创业板上市公司治理的相关做法,不违反相关规定的是( )。 Ⅰ.董事
教育费附加是随增值税、消费税和营业税附征并专门用于教育的一种特别目的税,税率为(
(2017年真题)国债期货合约是一种()。A.利率风险管理工具 B.汇率
分包单位的资质材料经审核不符合要求时,施工单位应根据()的审核意见,或重新报审
最新回复
(
0
)