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
2024-06-03
42
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
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下文介绍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:http://tihaiku.com/zcyy/3617727.html
相关试题推荐
[originaltext]Tearskeepyoureyeswetandtheyalsocontainsubstancethat
[originaltext]TenniswasoneoftheoriginalsportsplayedatthemodernOl
[originaltext]TenniswasoneoftheoriginalsportsplayedatthemodernOl
[originaltext]IfthepopulationoftheEarthgoesonincreasingatitspres
[originaltext]Accordingtosociologists,thereareseveraldifferentwaysi
[originaltext]Accordingtosociologists,thereareseveraldifferentwaysi
[originaltext]W:Thedoctorshouldbeabletoseeyouinafewminutes.Ijust
[originaltext]W:Thedoctorshouldbeabletoseeyouinafewminutes.Ijust
[originaltext]Sincethefirstprehistoricartistdrewthefirstpictureson
[originaltext]Sincethefirstprehistoricartistdrewthefirstpictureson
随机试题
Thenewswasaterribleblowtoher,butshewill______theshocksoon.A、getout
That’s______.A、whereourdifferenceslieB、ourdifferencesliethereC、wheredo
Onlyunderspecialcircumstances______totakemake-uptests.A、freshmanareper
Britainwaswealthycountry,ahundredandfiftyyears【C1】______Therewere
伊曲康唑片处方中填充剂()A:淀粉 B:淀粉浆 C:羧甲基淀粉钠 D:硬
患者男,45岁,左股骨骨折固定术后,卧床第10天活动后突发胸闷、气促,伴胸痛,出
WAIS-CR的数字广度测验主要测量()多选A.短时记忆能力 B.计算力
下列关于货币资金循环中涉及到的业务表述正确的是( )。A.出纳员每日对库存现金进
混凝土实体检验的主要检验项目是()。A.混凝土强度 B.钢筋保护层厚度 C.
根据《劳动合同法》,下列情形中,用人单位不得与劳动者解除劳动合同的是()。
最新回复
(
0
)