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
2010-06-30
69
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
oily liquid
解析
转载请注明原文地址:https://kaotiyun.com/show/IHJd777K
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
Answerquestions71-80byreferringtothesynopsesof4differentbooksonenvironmentaleconomicsinapublisher’sbrochure.A
Answerquestions71-80byreferringtothesynopsesof4differentbooksonenvironmentaleconomicsinapublisher’sbrochure.A
ItisinterestingtoreflectforamomentuponthedifferencesintheareasofmoralfeelingandstandardsinthepeoplesofJap
"Howareyoukeeping?""Look(31)______yourself.""GoodHealth.""Here’syourhealth.""Health,wealthandhappiness.""If
"Howareyoukeeping?""Look(31)______yourself.""GoodHealth.""Here’syourhealth.""Health,wealthandhappiness.""If
"Howareyoukeeping?""Look(31)______yourself.""GoodHealth.""Here’syourhealth.""Health,wealthandhappiness.""If
Thetwobooks,FinalExam:ASurgeon’sReflectionsonMortalitybyPaulineChen,andBetter:ASurgeon’sNotesonPerformanceby
Itisan______whichmaybebrown,greenorblackincolor.
Itisan______whichmaybebrown,greenorblackincolor.
随机试题
发生在控件接收焦点之前的事件是()。
下列先天性心脏病,属于无分流型的是
用下列方法消毒灭菌时,可以有人在室内的是
有关部分容积效应的叙述,错误的是
将(11010010.01010100)2表示成十六进制数是:
根据外合资经营企业法律制度的规定,下列关于中外合资经营企业董事会的表述中,正确的有()。
最常见的一种板书形式是()。
A、 B、 C、 D、 C引起中断发生的事件是中断源。中断源向CPU发出的请求称为中断请求。CPU收到中断请求后转去执行相应的事件处理程序称为中断响应。发生中断时被打断的程序暂停点称为断点。
FlyingtheHypertSkiesAlittleairplanehasgivennewmeaningtotheterm"goinghyper."TheHyper-Xrecentlybroket
WhoisBeethoven?Heisoneofthegreatest______intheworld.Whomdidheperformbefore?Heperformedbefore______.
最新回复
(
0
)