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
2023-09-01
69
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 new fuel for buses.
B、The causes of air pollution.
C、Careers in environmental engineering.
D、A way to improve fuel efficiency in buses.
答案
D
解析
What is the conversation mainly about?
转载请注明原文地址:http://tihaiku.com/zcyy/2976207.html
相关试题推荐
[originaltext]M:Idon’tenjoydatinganymore.[19]Ican’tseemtofindanyone
[originaltext]M:Idon’tenjoydatinganymore.[19]Ican’tseemtofindanyone
[originaltext]Formanyinternationalstudents,comingtotheUnitedStates
[originaltext]Formanyinternationalstudents,comingtotheUnitedStates
[originaltext]W:Goodmorning,Mr.Wang.Canyouspareafewminutes?M:Sure.
[originaltext]M:Youaremycampaignmanager,Julie.HowdoIconvincemembers
[originaltext]M:Congratulations!Ijustheardaboutyouracceptanceintolaws
[originaltext]M:Congratulations!Ijustheardaboutyouracceptanceintolaws
[originaltext]M:Congratulations!Ijustheardaboutyouracceptanceintolaws
[originaltext]M:Congratulations!Ijustheardaboutyouracceptanceintolaws
随机试题
PassageThree(1)Ifyourteenageristalkingabouttakingayearaway
[originaltext]Adultswholackbasicscienceandmathsskillsriskbeing"dec
Educatorsandbusinessleadershavemoreincommonthanitmayseem.Teacher
Goodevening,everyone.AsmanyofyouknowIoftentravelformyjobas
下列木门窗与地面的留缝高度,()是不正确的。A.外门窗4~7mm B.内门
A.BUN B.CEA C.AFP D.MRI E.ECT使用放射性核素
运维班设置应综合考虑管辖变电站的数量、分布情况、工作半径、应急处置、基础设施和电
某厂原使用可燃分为63%的煤作燃料,现改用经精选的可燃分为70%的煤,两种煤的可
甲基多巴宜联用A.三黄泻心汤 B.大山楂丸 C.葛根汤 D.钩藤散 E.
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)