首页
登录
职称英语
[originaltext]M: Hi Diana, mind if I sit down?W: Not at all, Jerry. How have y
[originaltext]M: Hi Diana, mind if I sit down?W: Not at all, Jerry. How have y
游客
2023-09-01
46
管理
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 confine 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 to 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 tile 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、The high temperatures required for its use.
B、The high cost of materials used in its production.
C、The lack of trained environmental engineers.
D、The opposition of automobile manufacturers.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2976503.html
相关试题推荐
[originaltext]Manylargecitiesareanythingbutbeautiful.Streetsarelit
[originaltext]Manylargecitiesareanythingbutbeautiful.Streetsarelit
[originaltext]Manylargecitiesareanythingbutbeautiful.Streetsarelit
[originaltext]Ifacityeverneededtallbuildingsinahurry,itwasChica
[originaltext]Ifacityeverneededtallbuildingsinahurry,itwasChica
[originaltext]M:Ijustcan’tconcentratehereintheflat.(19)Yousee,Arthu
[originaltext]CorntonValeisanewprisonspeciallydesignedforwomenin
[originaltext]CorntonValeisanewprisonspeciallydesignedforwomenin
[originaltext]CorntonValeisanewprisonspeciallydesignedforwomenin
[originaltext]CorntonValeisanewprisonspeciallydesignedforwomenin
随机试题
Mr.Smithhadanunusual______:hewasfirstanofficeclerk,thenasailor,an
Theprocessby【66】ofwhichhumanbeingsarbitrarilymakecertainthingsstan
预防局麻药局部吸收所引起全身反应的方法哪项是错误的()A.控制药物浓度 B
下列脂蛋白中易诱发胰腺炎的是A.高密度脂蛋白 B.极低密度脂蛋白 C.乳糜微
暴发型溃疡性结肠炎治疗首选:A.大剂量抗菌素 B.大剂量柳氮磺氨吡啶 C
阅读下面文段回答问题。 道而弗牵,强而弗抑,开而弗达。——《学记》
文中的括号处应填入的词语为:() A.政策 B.部署 C.精神 D.
表示“必要时(长期备用)”的缩写是()A.qs. B.prn C.hs
有一台300MVA机组的无励磁调压低压厂用变压器,容量为1250kVA,变压器电
再生沥青混合料性能试验指标有()。A.残留马歇尔稳定度 B.矿料间隙率 C
最新回复
(
0
)