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
60
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 listed as a light oil?
选项
A、Distillate oil.
B、Gasoline.
C、Lubrication oil.
D、Kerosene.
答案
C
解析
细节题。见第三段第二句话,直接列出了ABD,而未列出C。
转载请注明原文地址:https://tihaiku.com/zcyy/3199903.html
相关试题推荐
Hewascaught______intheexamination.A、deceivingB、cheatingC、trickingD、swin
BIRD-Xofferspestbirdcontrolproductsto______,controlandgetridofbirds
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residual
Allgasesandmostliquidsandsolidsexpandwhen______.A、heatedB、heatingC、b
Inthe1920sdemandforAmericanfarmproductsfell,asEuropeancountries
Inthe1920sdemandforAmericanfarmproductsfell,asEuropeancountries
Cheatingisnothingnew.Buttoday,educatorsandadministratorsarefinding
随机试题
Don’tletthechildplaywithscissors______hecutshimself.A、incaseB、sotha
Thecarissoldat$50,000,whichisfarmorethanitsreal______.A、moneyB、pro
ThetotalareaofNOCisabout41,000squaremetersincluding6,000squareme
建筑起重机械的施工单位应取得建设主管部门颁发的相应资质和建筑施工企业安全生产许可
糖尿病高危人群的筛检周期为()A.每年一次OGTT、FPG B.半年一次O
--Whatdoyouthinkofphysics? --Physi
简述现代企业人力资源管理各个历史发展阶段的特点。
下列个人住房抵押贷款做法中,会降低月偿还额的有()。A、提高首付款比例 B、争
将财政政策分为扩张性财政政策、紧缩性财政政策和中性财政政策,这是根据()对
在奥尔波特等人的价值观分类中,“重视拥有权力和影响力”的价值观类型被称为()。
最新回复
(
0
)