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
2024-02-19
18
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] 【S1】
选项
答案
G
解析
根据语法结构,此空应填一名词。另根据常识,我们知道石油是来自地底下或海洋底下,显然词库中只有surface(表面)是最符合题意的。本句意为:石油产品,诸如汽油、柴油、燃气、残余燃料油和润滑油等都属于同一种原材料,那就是在地表或大型水体下发现的原油。
转载请注明原文地址:https://tihaiku.com/zcyy/3464912.html
相关试题推荐
Thesteadyriseinthequalityofourproducts______theimprovementofourequ
A、Bemorecarefulaboutwhattheyadvertise.B、Advertisemorefortheirproducts
Tomwas______fromschoolforcheatingagainandagaininhisexams.A、excluded
Theyoungwomanstilldenies______(在考试中作弊).cheatinginexamination/thatshech
HazardousproductsarebeingpushedontheThirdWorldinincreasingvolume.The
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Petroleumproducts,suchasgasoline,kerosene,homeheatingoil,residualf
Todaypetroleumprovidesaround40%oftheworld’senergyneeds,mostlyfuel
Todaypetroleumprovidesaround40%oftheworld’senergyneeds,mostlyfuel
随机试题
大自然在这个季节显得特别纯洁,令人赏心悦目的纯洁。Thewonderfulpurityofnatureatthisseasonisamost
[originaltext]Interviewer(M)JeanChatzky(W)Now,listentoPartOneofthe
邀请来校讲学说明:以北京大学法学院院长张守文的名义,邀请Mr.Green来校做一个有关法律的讲座。内容:1.得知Mr.Green在华访问
在()上,监控一个端口就能捕获其他所有端口的通信流量。A.二层交换机 B.
通过对组织的目标、资源、特质、环境等因素的分析,准确地找出组织存在的问题与问题产
关于危害行为的正确表述是( )。 A.危害行为是一切犯罪的必备条件 B.危
下列属于中国银行业协会专业委员会的是()。A.秘书处 B.理事会
下列各项表述中,符合现行增值税税法有关规定的是()。A.单用途卡企业销售单
土袋围堰适用于水深()的土。A.不大于2m、流速小于1.5m/s、河床为渗水性较
关于小细胞未分化癌的叙述,下列哪项不正确A.恶性程度最高,早期远处转移 B.多
最新回复
(
0
)