首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
It is an ___________ which may be brown, green or black in color.
It is an ___________ which may be brown, green or black in color.
admin
2010-07-06
35
问题
It is an ___________ which may be brown, green or black in color.
Petroleum is a very important mineral. It gives us heat and light. It also gives us power for our cars, planes, and ships. It gives us power for machines of all kinds.
How was petroleum created? Scientists believe petroleum was formed from the remains of plants and animals. These plants and animals lived and died millions of years ago. Remains are what is left after a plant or animal has died.
What exactly is petroleum? Petroleum is a mineral that is a mixture of hydrocarbons. It is an oily liquid which may be brown, green, or black in color. The word "petroleum" comes from Latin and Greek. It means "rock oil".
Crude oil is petroleum that comes directly from deep in the ground. It is then taken to a refinery. A refinery is a kind of factory with equipment in it to refine oil. At a refinery the crude oil is purified and separated into its various parts. From the refined petroleum we obtain important products, such as gasoline, kerosene, fertilizers, detergents, plastics, drugs, and perfumes. These are just a few of the thousands of useful products we get from this valuable mineral - petroleum.
选项
答案
crude oil
解析
转载请注明原文地址:https://jikaoti.com/ti/6fisFFFM
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Payandproductivity,itisgenerallyassumed,shouldberelated.Buttherelationshipseemstoweaken【C1】________peoplegetold
Youhavereadanarticleinamagazinewhichstates,"SomepeoplecriticizethemainOlympicstadiumBirdNestinBeijing,sayi
Youhavereadanarticleinanewspaperwhichstatesthat"Childrenshouldbepaidfordoinghousework,forthishelpsthemtol
OnNovember5th1605,abandofEnglishCatholichotheadsplannedtodetonate36barrelsofgunpowderundertheHouseofLords.
Culturalglobalization,formany,meansWesternizationorAmericanization.Animportantdistinctionconcerningtoday’scultural
America—thegreat"meltingpot"—hasalwaysbeenarichblendofculturaltraditionsfromallovertheworld.ManyAmericanfamil
WorldleadersmetrecentlyatUnitedNationsheadquartersinNewYorkCitytodiscusstheenvironmentalissuesraisedattheRio
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
ENow,I’dlikeyoutodiscussaboutthetwowaysoflearningEnglish—groupdiscussionandEnglishclass.Youshouldtakecaret
Itisan______whichmaybebrown,greenorblackincolor.
随机试题
FiberLoss的意思是光纤衰耗。()
产品质量法中的产品也包括建筑工程产品、军工产品。()
当苯环上含有硝基、磺基等强吸电基团时,很难发生弗氏烷基化、酰基化反应。 ()
区分社会经济时代的物质标志是()
关于感染性心内膜炎,下列哪项正确?()
设函数f(x)在(a,b)内可微,且f’(x)≠0,则f(x)在(a,b)内()。
消费者效用最大化的均衡条件是()。
下列关于“累计识别出的错报”的说法中,不正确的是()。
Ifyouoftenfeeltiredandthedoctorcan’tfindanythingwrongwithyou,youmaybeinastateofsub-health(亚健康).Subhealthi
一向引领业内潮流的苹果新品发布会,这一次让“果粉”们深感失望。业界对苹果新品发布会恶评如潮,就连苹果公司的股价也是应声下跌。此刻的苹果,似乎只顾着躺在过去的功劳簿上自我陶醉,失去了曾经破釜沉舟、背水一战的勇气。对于现代企业而言,危机随时存在,根本不存在什么
最新回复
(
0
)