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
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【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] 【S5】
选项
答案
C
解析
根据句子结构,此处应选择一个介词与is made…of构成固定搭配,词库中只有up和into两个词,相比只有up最符合题意,be made up of的意思是“由……构成”。本句意为:石油产品的外在形式多种多样,如薄的、厚的、透明的和不透明的,但是不管怎样,他们的化学成分都是南碳和氢两种元素构成。
转载请注明原文地址:https://tihaiku.com/zcyy/2848652.html
相关试题推荐
HazardousproductsarebeingpushedontheThirdWorldinincreasingvolume.The
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
CelebritiesastheProducts’Spokespeople1.明星代言现象很普遍2.明星代言广告存在一些问题Advertis
Hegotangryonheatingthisandthrewdownallthedishes______reach.A、under
Thingsonthefarmsuchasmilk,potatoesandwoolare______.A、productsB、provi
随机试题
我国目前已知最早的八边形平面的塔是属于哪个时期?( )A.北魏 B.隋 C
A.舌 B.耳 C.口 D.鼻 E.目肝在窍为()
头晕而重,如物缠裹,痰多苔腻属于A.肝火上炎、肝阳上亢 B.气血亏虚 C.痰
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
统计方法是指有关()统计数据的方法。A.收集 B.处理 C.
我国现行城市规划技术标准体系框架中属于通用标准城市规划标准的是()。A.《历
下列属于附认股权证债券特点的有()。A.发行附认股权证的债券,是以潜在的股
同一厂家、同一类型的成型钢筋,不超过( )t为一批,每批随机抽取( )个成型
A. B. C. D.
关于施工平行承发包特点的说法,正确的是()。A.签订的合同越多,业主的责任与义
最新回复
(
0
)