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
2023-09-15
22
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?
从听力对话中我们可知女士向男士介绍一种能使发动机运转更有效率的方法(a way to make their engines more efficient)。听力材料中前半部分提到的女士选择坐公共汽车以及环境污染问题实际都是在为本文介绍coniine oxide这种提高发动机效率的方法作铺垫。
转载请注明原文地址:https://tihaiku.com/zcyy/3017135.html
相关试题推荐
[originaltext]M:Don’tyourecognizeme,Jean?I’mTom,TomGreen.W:T
[originaltext]M:Don’tyourecognizeme,Jean?I’mTom,TomGreen.W:T
[originaltext]W:Nicetoseeyouagain,John.Ihopeyou’refeelingbetter.
[originaltext]W:Morning,sir.MayIaskwhetherMr.Smithhasfreetimeno
[originaltext]W:Hello,mayIhelpyou?M:Yes,I’dliketobookaroom
[originaltext]W:Hello,ABCCompany.MayIhelpyou?M:Hello.Thisis
[originaltext]W:WhydoyouplantofireJohn?Heissmart.M:Iknow.
[originaltext]W:Morning,sir.MayIaskwhetherMr.Smithhasfreetimeno
[originaltext]W:HowaboutgoingshoppingonSaturday?M:I’dliketo.
[originaltext]M:IneedaticketforRight220onDecember22.W:OK,
随机试题
It’softensaidthatplantshiddeninthetangleoftheAmazonianrainfores
Withtheadvancementofmedicaltechnologyandsocialwelfare,oldageis,toma
TheWesthasbeguntotakemorenoticeoftheEast.Thefifth【C1】______of
Forthispart,youareallowed30minutestowriteashortessayentitledTh
急性肾衰竭患者出现高钾血症时,紧急处理措施正确的是A.静脉输注葡萄糖酸钙 B.
下列关于慢性再生障碍性贫血(再障)的描述,正确的是A.临床较少见,病程长 B.
B本题的规律是:不管是以行为单位还是以列为单位,都有前两个图形叠加后可得第三个图形。
通过基本6项年评价指标进行判定所在区域达标情况,其中SO2的评价指标正确的是()
横道图施工进度计划的主要优点是( )。A.能正确反映出工程项目的关键所在 B
绿色施工原则的"四节一环保是指()和环境保护。A.节能 B.节材 C.节水
最新回复
(
0
)