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、The high temperatures required for its use. B、The lack of trained environmental engineers. C、The opposition of automobile manu
A、The high temperatures required for its use. B、The lack of trained environmental engineers. C、The opposition of automobile manu
admin
2010-08-21
38
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. Instead 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 able to do ourselves.
选项
A、The high temperatures required for its use.
B、The lack of trained environmental engineers.
C、The opposition of automobile manufacturers.
D、The high cost of materials used in its production.
答案
A
解析
听力材料最后女士的回答中提到了这种材料的缺陷:it’s not really that easy及you first have to heat it over 10,000 degrees,即coniine oxide的使用需要高温,选项A是对女士回答的同义转述。
转载请注明原文地址:https://kaotiyun.com/show/iD7K777K
0
大学英语六级
相关试题推荐
Whenpeoplecareenoughaboutsomethingtodoitwell,thosewhodoitbesttendtobefarbetterthaneveryoneelse.There’sa
EasterEasteristhemostimportantfestivalintheChristiancalendar.ItisthecommemorationofJesus’deathandhisrisi
Afewmonthsago,millionsofpeopleinLondonheard【B1】______alloverthetown.TheEmergencyservices,theFireDepartments,
A、Becausetheyworshippigsbestofall.B、Becausetheyconsiderpigsasbadanimals.C、Becausetheyaren’tusedtotalkingabou
A、Theylivedincaves.B、Theytraveledingroups.C、Theyhadanadvancedlanguage.D、Theyatemostlyfruit.A听到W在说冰河时代的社会,M表示很惊奇
ProgrammingLanguagesProgramminglanguagesarehowpeopletalktocomputers.Thecomputerwouldbejustashappyspeakinga
Ice-cream’soriginsareknowntoreachbackasfarasAlexandertheGreat,althoughnospecificdateorpersonalityhavebeencr
Ice-cream’soriginsareknowntoreachbackasfarasAlexandertheGreat,althoughnospecificdateorpersonalityhavebeencr
随机试题
有权批准医疗机构配制临床需要而市场无供应的麻醉药品和精神药品制剂的部门是
关于月经下列哪项是错误的
对人类来说.太阳是生命之源,地球上的一切生命活动都与太阳息息相关。但是,当大量的太阳活动伴随着如日冕物质抛射、质子事件发生时,就会对人类生产生活造成危害。因此,__________,成为各国科学家孜孜不倦的追求。目前,世界上对太阳大气的观测,国外太阳望远镜
某市为了减少交通堵塞,采取如下限行措施:周一到周五的工作日,非商用车按尾号0,5,1,6,2,7,3,8,4,9分五组顺序分别限行一天,双休日和法定假日不限行。对违反规定者要罚款。关于该市居民出行的以下描述中,除哪项外,都可能不违反限行规定?
简述市场参与者的有限理性,并将其与传统金融理论中的完全理性加以比较。
()不是欧洲启蒙主义戏剧的代表人物。
设f(x)是二阶常系数非齐次线性微分方程y’’+Py’+qy=sin2x+2ex的满足初始条件f(0)=f’(0)-0的特解,则当x→0时,()
有一个仓库可以存放P1、P2两种产品,但是每次只能存放一种产品。要求:①w=P1的数量-P2的数量;②-1<w<k(i、k为正整数)。若用P/V操作实现P1和P2产品的入库过程,则至少需要上(26)个同步信号量及(27)个互斥信号量
ASuccessStoryAt19,BenWayisalreadyamillionaire,andoneofagrowingnumberofteenagerswhohave【C1】______theirfo
城镇化(urbanization)是指农村人口向城市迁移的过程。衡量一个国家城镇化水平的一个重要指标是农村和城镇地区的人口分布。去年,中国的城镇化率超过了50%。这标志着我国步入了一个全新的“城市型社会”。城镇化已经成为我国社会和经济发展的重要组成部分。它
最新回复
(
0
)