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 lack of trained environmental engineers. C、The opposition of automobile manu
A、The high temperatures required for its use. B、The lack of trained environmental engineers. C、The opposition of automobile manu
admin
2009-08-19
31
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、The high temperatures required for its use.
B、The lack of trained environmental engineers.
C、The opposition of automobile manufacturers.
D、The high cost of materials used in its production.
答案
A
解析
According to the woman,what may limit the use of coniine oxide in ears?
听力材料最后女士的回答中提到了这种材料的缺陷:it’s not really that easy及you first have to heat it over 10,000 degrees,即coniine oxide的使用需要高温,选项A是对女士回答的同义转述。
转载请注明原文地址:https://kaotiyun.com/show/z0pK777K
0
大学英语六级
相关试题推荐
Thefollowingisalistoftermsrelatedtotradeandeconomy.Afterreadingit,youarerequiredtofindtheitemsequivalentt
Normallyastudentmustattendacertainnumberofcoursesinordertograduate,andeachcoursewhichheattendsgiveshimacr
IntheUnitedStates,peoplemaygotodifferentshoppingplacesaccordingtotheireconomic【T1】______Wealthypeopleoftengot
A、Becausehewantstovisither.B、Becausehewantstodiscusshersuggestionwithher.C、Becausehewantstoofferaproposal.
It’shightimethegovernment______somemeasurestoraisepeople’sawarenessofenvironmentalprotection.
Thispartistotestyourabilitytodopracticalwriting.Youarerequiredtowriteabusinessletteraccordingtothefollowin
Alotofyoungpeoplefinditdifficulttogetajob,especiallyinthefirstfewmonthsaftertheyleaveschool.Thisismuchm
Indiaistheworld’sbiggestgoldconsumer,butthecountry’spassionfortheyellowmetaliswaning(逐渐减弱).Recordhighpricesa
Check-inRequirementsPassengersandtheirbaggagemustbecheckedinatleast45minutesbeforedeparturefordomesticflig
DearMr.Thomas,Ithasbeentwoweekssincewemovedintothehouseyourecommended.Iamreallyannoyedbythelow-quality
随机试题
A.脊柱呈“竹节样”B.骨膜反应呈三角形C.骨端膨胀呈肥皂泡样D.长管骨干骺区有骨性疣状突起E.有死骨形成并有包壳骨巨细胞瘤的特征性X线片变化是
加快(),是把我国巨大人口压力转化为人力资源优势的根本途径。
期刊市场定位的基本要素不包括()。
1.十多年来,贴在华新民身上的“标签”越来越多:“北京老胡同的守护神”“与推土机作战的女人”“阻碍城市化的守旧者”一一而更多人津津乐道的是她的法国背景与血统。“别叫我‘外国人’,我是中国人。”华新民用蓝色的眸子盯着记者,解释道:“一个在胡同里长大的北京孩子
()对于轿车相当于牡丹对于()
6,7,9,15,(),159,879。
下列各项,说法不正确的是()。
球间牙本质(interglobulardentin)
主语都是施事。()
Mostgiftgivingshowsnothingmorethanthespiritofloveandfriendship.Butitispossibletoformsomedifferences【36】thek
最新回复
(
0
)