首页
登录
职称英语
Petroleum products, such as gasoline, kerosene, home heating oil, residual f
Petroleum products, such as gasoline, kerosene, home heating oil, residual f
游客
2023-07-18
66
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【S1】______, 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【S2】______. Sometimes crude oil is secured by drilling a hole through the earth, but more dry holes are drilled than those producing oils. Pressure at the source or pumping【S3】______crude oil to the surface.
Crude oil wells flow at varying rate, from ten to thousands of barrel per hour. Petroleum【S4】______are always measured in 42-gallon barrels.
Petroleum products vary greatly in physical appearance: thin, thick, transparent or opaque, but regardless, their chemical composition is made【S5】______of only two elements: carbon and hydrogen, which form compounds called hydrocarbons. Other chemical elements【S6】______in union with the hydrocarbons are few and reclassified as impurities. Trace elements are also found, but these are of such minute quantities that they are disregarded. The【S7】______of carbon and hydrogen forms many thousands of compounds which are possible because of the various positions and joining of these two atoms in the hydrocarbon molecule.
The various petroleum products are【S8】______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【S9】______or residual fuel oil and is used mostly for burning under boilers. Additional complicated refining processes rearrange the chemical structure of the hydrocarbon to produce other products, some of which are used to【S10】______and increase the octane rating of various types of gasoline.
A) degrade B) refined C) up D) light
E) products F) into G) surface H) heavy
I) forces J) combination K) exterior L) found
M) upgrade N) made O) interior [br] 【S4】
选项
答案
E
解析
根据句子结构,此处应填一名词的复数形式,符合题意的只有products,petroleumproducts意思为“石油产品”。本句意为:石油产品通常是以42加仑一桶来计算的。
转载请注明原文地址:http://tihaiku.com/zcyy/2848651.html
相关试题推荐
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Todaypetroleumprovidesaround40%oftheworld’senergyneeds,mostlyfuel
Todaypetroleumprovidesaround40%oftheworld’senergyneeds,mostlyfuel
Thingsonthefarmsuchasmilk,potatoesandwoolare______.A、productsB、provi
随机试题
Thesentence"Museumisaslipperyword"inthefirstparagraphmeansthat_____
[originaltext]W:Excuseme?M:Yes,ma’am,canIhelpyou?W:Couldyoutellme
Therearebetween3,000and6,000publiclanguagesintheworld,andwemust
Chinaisthetopsourcecountryofinternationalstudentsintheworld.Recen
进行竞争性的水平对比,其步骤包括()。A.持续改进对比指标 B.选择竞争对
A.单斜杆支撑 B.K形支撑 C.V形支撑 D.人字形支撑
图1是汉代耧车的模型,耧车的功能是()。 A.播种 B.垦荒 C.脱粒
函数单调性是刻画函数变化规律的重要概念,也是函数的一个重要性质。 (1)请叙
把下面的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
发行者发行这款产品后,面临的风险是()。A.中证500指数上涨 B.中证
最新回复
(
0
)