首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The high temperatures required for its use. B、The high cost of materials used in its production. C、The lack of trained environ
A、The high temperatures required for its use. B、The high cost of materials used in its production. C、The lack of trained environ
admin
2004-12-29
48
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 coniine 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 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 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
According to the woman, what may limit the use of the coniine oxide in cars?
转载请注明原文地址:https://jikaoti.com/ti/rYAYFFFM
0
托福(TOEFL)
相关试题推荐
Youshouldspendabout20minutesonQuestions15-26whicharebasedonReadingPassage2below.Anexaminationofthefunction
Lookatthefollowingstatements(Questions34-40)andthelistofcountriesbelow.Matcheachstatementwiththecorrectcountry.
Lookatthefollowingstatements(Questions34-40)andthelistofcountriesbelow.Matcheachstatementwiththecorrectcountry.
Accordingtothewriter,themostsignificantthingabouttortoisesisthat
InParagraphG,thewritersuggeststhatanimportantfeatureofAboriginalartis
ReadingPassage1hasnineparagraphslabelledA-I.Whichparagraphcontainsthefollowinginformation?Writethecorrectletter
【21】Whichgraphshowstherelativepopularityofdifferentcinemas?
WhatdidPhoebefinddifficultaboutthedifferentresearchtechniquessheused?ChooseFIVEanswersfromtheboxandwritethe
Choosethecorrectletter,A,BorC.LabelsgivingnutritionalinformationonfoodpackagingJackprefersthedailyvaluesyst
ResearchprojectonattitudestowardsstudyRegardingteaching,Selinasaysshehaslearnedthat
随机试题
在进行环氧煤沥青防腐前,对钢管应进行外观检查和测量,钢管弯曲度应小于()钢管长度。
下列《哭小弟》语句中属于侧面描写的有()
A.持续性骨牵引B.手法整复外固定C.先使用血管扩张剂,如无效可采用手术治疗D.手术切开复位内固定并探查血管E.持续骨牵引及应用血管扩张剂关于肱骨髁上骨折,下列各种情况的处理方法中正确的是肘部严重肿胀,桡动脉搏动消失,手指颜色,温度,感觉正常,
A.吴茱萸、蛇床子B.车前子、地肤子C.山豆根、制川乌D.马钱子、天仙子E.枇杷叶、侧柏叶根据《中国药典》对有毒中药的分类“小毒”中药是
我国宪法第12条第2款规定,“国家保护社会主义的公共财产,禁止任何组织或个人用任何手段侵占或破坏国家的和集体的财产。”关于这一法律规范的表述,下列选项中,不正确的选项是哪一个?()
招标人或招标机构应在开标时制作开标记录,并在开标后()日内通过《中国国际招标网》备案。
下列各项中,不属于“应付职工福利费”用途的是()。
首席风险官对于侵害客户和期货公司合法权益的指令或者授意应当予以拒绝;必要时,应当及时向()报告。
A、 B、 C、 D、 C
TheColdPlacesTheArcticisapolarregion.ItsurroundstheNorthPole.LikeAntarctica,theArcticisalandofice
最新回复
(
0
)