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 new fuel for buses. B、The causes of air pollution. C、A way to improve fuel efficiency in buses. D、Careers in environmental e
A、A new fuel for buses. B、The causes of air pollution. C、A way to improve fuel efficiency in buses. D、Careers in environmental e
admin
2004-12-29
112
问题
M: Hi Diana, mind if I sit down?
W: Not at all, Jerry. 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 the coniine oxide. It’s a really good insulator. And a thick coat of it get sprayed on the 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 cost, they say this will all pay for itself in just six months.
M: Sounds like people should all go out and get some this stuff to spray 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 be able to do ourselves.
选项
A、A new fuel for buses.
B、The causes of air pollution.
C、A way to improve fuel efficiency in buses.
D、Careers in environmental engineering.
答案
C
解析
What is the conversation mainly about?
转载请注明原文地址:https://www.kaotiyun.com/show/6O8O777K
0
托福(TOEFL)
相关试题推荐
Lookatthefollowingdiagrams(Questions30-32),andthelistoftypesofmovementbelow.Matcheachdiagramtothetypeofmove
TheboxbelowgivesalistofresponsesA-PtothequestionnairediscussedinReadingPassage1.Answerthefollowingquestions
ReadingPassage1hasnineparagraphslabelledA-I.Whichparagraphcontainsthefollowinginformation?Writethecorrectletter
MeasurestocombatinfectiousdiseaseintsaristRussiaAInthesecondhalfoftheseventeenthcentury,Russianauthoritiesbeg
Youshouldspendabout20minutesonQuestions1-13,whicharebasedonReadingPassage1below.AverybriefhistoryoftimeTh
TheStudyofChimpanzeeCultureA.Afterstudyingthesimilaritiesbetweenchimpanzeesandhumansforyears,researchershav
Thievesoftentargetstudents’homesbecausestudents______.The______isvaliduntiltheendofJune.
PrairieDogbarkshave______meanings.【34】
YoucanbuyPhonecardsofdifferent______fromvariousshops.
ChooseTWOletters,A-E.WhichTWOskillsdidBlancheandJeffreyagreetheyhadlearnedfromtheproject?AHowtomanagethei
随机试题
具有通经络作用的药物有
属于喹啉衍生物类生物碱的是
根据中心地理论,圆形市场是联系中心地与服务区的最有效理论图式。()
调节货币市场资金供求的杠杆的是()。
编剧从其任职的电视剧制作中心取得的剧本使用费,按“特许权使用费所得”项目征收个人所得税。()
阅读下面这首诗,写一篇500字左右的鉴赏评论文章。约客南宋·赵师秀黄梅时节家家雨,青草池塘处处蛙。有约不来过夜半,闲敲棋子落灯花。
课程有不同分类标准,根据任务分为()。
在教育研究的数据分析中,某统计量为——2.5,该统计量最有可能是()。
Studythefollowingcartooncarefullyandwriteanessayof160—200words.Youressayshouldcoveralltheinformationprovided
【B1】【B15】
最新回复
(
0
)