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
A、A fuel that burns cleanly. B、An oil additive that helps cool engines. C、A material from which filters are made. D、An insulatin
A、A fuel that burns cleanly. B、An oil additive that helps cool engines. C、A material from which filters are made. D、An insulatin
admin
2010-10-14
52
问题
M: Hi Diana, mind if I sit down?
W: Not at all, Jack. How have you been?
M: Good. But I’m surprised to see you on the city bus. Your car in the shop?
W: No. I’ve just been thinking a lot about the environment lately. So I decided the air will be a lot cleaner if we all use public transportation when we could.
M: I’m sure you are right. The diesel bus isn’t exactly pollution free.
W: True. But they’ll be running a lot cleaner soon. We were just talking about that in my environmental engineering class.
M: What’s the city gonna do? Install pollution filters of some sort on their buses?
W: They could, but those filters make the engines work harder and really cut down on fuel efficiency. In stead they found a way to make their engines more efficient.
M: How?
W: Well, there is a material called coniine oxide. It’s a really good insulator. And a thick coat of it get sprayed on certain part of the engine.
M: An insulator?
W: Well, yeah. Actually, what it does is reflect back the heat of burning fuel. So the fuel will burn much hotter and burn up more completely.
M: So a lot less unburned fuel comes out to pollute the air, right?
W: Yeah, and the bus will need less fuel. So with the savings on fuel oil costs, they say this will all pay for itself in just six months.
M: Sounds like people should all go out and get some of this stuff to spray on their car engines.
W: Well, it’s not really that easy. You see, normally, the materials are fine powder. To melt it so you can spray a coat of it on the engine parts, you first have to heat it over 10,000 degrees and then, well, you get the idea. It’s not something you or I would be a ble to do ourselves.
选项
A、A fuel that burns cleanly.
B、An oil additive that helps cool engines.
C、A material from which filters are made.
D、An insulating material sprayed on engine parts.
答案
D
解析
细节题。在听力对话中出现一个专业名词时,通常情况下紧接着会对这一名词进行近一步的解释。听力材料中后文对coniine oxide作了解释It’s a really good insulator.And a thick coat of it get sprayed on the certain part of the engine.“是一种很好的绝缘体,并且喷洒在发动机某一部位的厚厚的涂层。”选项D将这一解释进行了归纳概括。
转载请注明原文地址:https://kaotiyun.com/show/ePy7777K
0
大学英语四级
相关试题推荐
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthe【B1】______,boththeirknowledgeandexperien
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthe【B1】______,boththeirknowledgeandexperien
ImaginesendingelectronicmailtoyourfriendintheU.S.ordiscussingyourgardeningproblemwitha【B1】______inAustralia,or
A、Becauseitisnotthesamewiththeothers.B、Becauseitisdifficulttopickupthefoods.C、Becauseitisregardedasakind
Theinterestthatcreativedramaticsgeneratesinstudiesisitsmostobviousadvantage.Thefactthatchildrendevelop【C1】_____
Theinterestthatcreativedramaticsgeneratesinstudiesisitsmostobviousadvantage.Thefactthatchildrendevelop【C1】_____
Materialculturereferstowhatcanbeseen,held,felt,used--whatacultureproduces.Examiningaculture’stoolsandtechnolo
Foranyonewhoissetonacareerinfashion,itisnotenoughtohavesucceededincollege.Therealtestiswhethertheycans
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
随机试题
刘先生,60岁,今晨在硬膜外麻醉下接受了膝关节置换术,手术顺利返回病房。术后3周,刘先生已能拄拐行走,即将出院,护士对其进行出院指导,下列哪项不妥
根据基金单位是否可增加或赎回,可将基金分为( )。
集合竞价在每个交易日上午9时开始。()
“栽树莫伤树的根,育人莫伤自尊心。”这句话启示教师在德育过程中要遵循()。
2009年3月,墨西哥、美国等地接连爆发甲型HINI疫情,后来在全世界蔓延,10月、11月我国出现两个高峰期,甲型HINI疫情的防控形势不容乐观。下列关示甲型HINI流感病毒的叙述,错误的是()。
负责人就来文如何办理对有关承办部门和承办人员提出批示性意见的活动是收文处理中的()。
国家凝聚力首先意味着中华文明在中华大地和华人世界的延续和发展,即在国内外形成对中华文明的深刻体认和自豪感。这种体认和自豪感是超越单一民族国家边界的,在全球比较的尺度上尤为清晰。随着中国综合实力的增强,中华文明的发展得到很大推进。这段文字未包含的意思是:
写作要有题目,就是要有中心思想,要有内容,目的性要明确。如一篇文章或记载一件事情,或者提出、解决一个问题,或者是发表自己的主张、见解等。总之要有所为而作。无所“为”的文章,尽管文理通顺,语气连贯,但内容空洞,只能归入废话一栏,以不写为好。这段支持的主要论点
“颜筋柳骨”中的“颜”指的是唐代的(),其创立了楷体书法,主要作品有《多宝塔碑》《颜勤礼碑》等。
Thedaythissmalltowntolditsresidentstostopdrinkingthewater,lifeonGlendaleBoulevardturnedfromquiettoalarming.
最新回复
(
0
)