首页
登录
职称英语
[originaltext]M: Hi, Diana. Mind if I sit down?W: Not at all, Jack. How have y
[originaltext]M: Hi, Diana. Mind if I sit down?W: Not at all, Jack. How have y
游客
2024-05-10
49
管理
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、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
What is the coniine oxide?
转载请注明原文地址:http://tihaiku.com/zcyy/3592475.html
相关试题推荐
[originaltext]Thecostisgoingupforjustabouteverything,andcolleget
[originaltext]Thecostisgoingupforjustabouteverything,andcolleget
[originaltext]Thecostisgoingupforjustabouteverything,andcolleget
[originaltext]Tomostofussharksarethemostdangerousfishintheseaa
[originaltext]Tomostofussharksarethemostdangerousfishintheseaa
[originaltext]Tomostofussharksarethemostdangerousfishintheseaa
[originaltext]Therearemanylegalrightstomakesurethatpeoplewillbet
[originaltext]Therearemanylegalrightstomakesurethatpeoplewillbet
[originaltext]W:Hi,ProfessorSmith.Ihearyou’vewrittenabooktitledVisio
[originaltext]W:Hi,ProfessorSmith.Ihearyou’vewrittenabooktitledVisio
随机试题
Thissilkhasgoneright______andwehavenotsoldasinglepieceofitforweek
Educationalphilosophyhaschangedagreatdealinthe50yearssinceIwas
CordiaHarringtonwastiredofstandingupalldayandsmellinglikeFrench
Therecentgrowthofexportsurplusesontheworldfoodmarkethascertainly
A
A.1.8~3.0mg/L B.50mg/L C.100mg/L D.50
2018年1—12月,社会消费品零售总额380987亿元,比上年增长9.0%(扣
从ADR曲线的形态判断大势,ADR从低向高超过0.5,并在0.5上下来回移动几次
女性,42岁妇女,2个月前出现接触性出血。宫颈活检报告为:上皮全层非典型增生,以
双代号网络图中,某非关键工作的拖延时间不超过自由时差,则()。A.后续工作最早可
最新回复
(
0
)