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
64
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://kaotiyun.com/show/QRDd777K
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
OnNovember5th1605,abandofEnglishCatholichotheadsplannedtodetonate36barrelsofgunpowderundertheHouseofLords.
OnNovember5th1605,abandofEnglishCatholichotheadsplannedtodetonate36barrelsofgunpowderundertheHouseofLords.
OnNovember5th1605,abandofEnglishCatholichotheadsplannedtodetonate36barrelsofgunpowderundertheHouseofLords.
WorldleadersmetrecentlyatUnitedNationsheadquartersinNewYorkCitytodiscusstheenvironmentalissuesraisedattheRio
WorldleadersmetrecentlyatUnitedNationsheadquartersinNewYorkCitytodiscusstheenvironmentalissuesraisedattheRio
Theaveragepersonseestensofthousandsofimagesaday—imagesontelevision,innewspapersandmagazines,andonthesidesof
WhichoneofthefollowingisNOTmentionedasanadvantageofpublicity?Thepassageimpliesthat______.
Itisan______whichmaybebrown,greenorblackincolor.
Itisan___________whichmaybebrown,greenorblackincolor.
随机试题
测定血清铁(SI)、血清铁蛋白(SF)、总铁结合力(TIBC)及转铁蛋白饱和度(TS)可了解机体铁代谢情况,缺铁性贫血时()
下列关于职业病的特点论述错误的是
熔凝的镁氧矿
将学生成绩分为优、良、中、及格和不及格五类,所采用的计量尺度是( )。
下面关于“四大怀药”的叙述中,不正确的是()。
()不属于良好人际关系原则。
综合实践活动是由国家设置、由地方和学校根据实际开发的课程领域。它体现了()管理制度的特征和功能,因而是最能体现学校特色、满足学生个性差异的发展性课程。
德国心理学家艾宾浩斯对遗忘的过程进行了系统研究,他认为()。
劳动力成为商品是货币转化为资本的前提条件,这是因为()。
月季:鲜花:装饰
最新回复
(
0
)