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 bums cleanly. B、An oil additive that helps cool engines. C、A material from which filters are made. D、An insulating
A、A fuel that bums cleanly. B、An oil additive that helps cool engines. C、A material from which filters are made. D、An insulating
admin
2004-12-29
14
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 fuel that bums 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
What is the coniine oxide?
转载请注明原文地址:https://kaotiyun.com/show/IO8O777K
0
托福(TOEFL)
相关试题推荐
AnswerthequestionsbelowusingNOMORETHANTHREEWORDSfromthepassageforeachanswer.Writeyouranswersinboxes22-26on
TheboxbelowgivesalistofresponsesA-PtothequestionnairediscussedinReadingPassage1.Answerthefollowingquestions
Completethesummarybelow.ChooseNOMORETHANTWOWORDSfromthetextforeachanswer.IdentifyingtheSpottedFlycatcherThe
HowdesertsareformedA.Adesertreferstoabarrensectionofland,mainlyinaridandsemi-aridareas,wherethereisal
【21】Whichgraphshowstherelativepopularityofdifferentcinemas?
Notetakingimprovesyourabilityto______onwhatthespeakersays.【38】
PrairieDogbarkshave______meanings.PrairieDogsareabletoinvent______forthingstheyhaveneverseenbefore.
WritetheappropriatelettersA-CagainstQuestions17-20.WhatarethelocationsofthefollowingplacesinRadford?(A)par
Completethetablebelow.WritetheappropriatelettersA-GagainstQuestions36~40.MAINROLES(A
Choosethecorrectletter,A,BorC.Whatwasthemostdifficultproblemwhenthecompanywasfounded?
随机试题
“三个代表”重要思想全面体现党的()
平整场地时,水准仪读得后视读数后,在一个方格的四个角M、N、O和P点上读得前视读数分别为1.254m、0.493m、2.021m和0.213m,则方格上最高点和最低点分别是:
Windows中切换应用程序的方法有()。
中长期国债期货采用指数报价法。( )
依照《电信条例》规定,我国对经营电信业务采取的市场准入管理制度是()。[2008年真题]
根据外商投资企业法律制度规定,下列关于中外合资经营企业(简称合营企业)与中外合作经营企业(简称合作企业)区别的表述正确的是()。
在对散客送站服务中,导游人员与游客之间确认送站时间和地点的工作必须在送站前24小时进行。()
《刑法》第234条规定:“故意伤害他人身体的,处三年以下有期徒刑、拘役或者管制。犯前款罪,致人重伤的,处三年以上十年以下有期徒刑;致人死亡或者以特别残忍手段致人重伤造成严重残疾的,处十年以上有期徒刑、无期徒刑或者死刑。本法另有规定的,依照规定。”
关于Web服务的描述中,错误的是()。
AtthelastplaceGary,worked,they______anannualcompanypicnic.Alltheemployees______bringtheirfamiliesalongandsp
最新回复
(
0
)