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
35
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
Itispossiblethatyourcompanyisfacingdifficultiesofwhichwearenotaware.
Thefollowingisanadvertisement.Afterreadingit,youshouldcompletetheinformationbyfillingintheblanksmarked46thro
ItisknowntousthatEnglishisnotasoldasChinese,butitiswidelyusedbymostpeopleallovertheworld.Englishspeake
DearSir,IwillgraduatefromShanghaiUniversityofInternationalBusinessandEconomicsthisyear.Asastudentmajoring
Indiaistheworld’sbiggestgoldconsumer,butthecountry’spassionfortheyellowmetaliswaning(逐渐减弱).Recordhighpricesa
HaveyounoticedthattheYellowPagesaregettingthinnereveryyear?That’sbecausefewerpeopleareusingthem.Instead,your
Marketingfurnituretothepubliccanbechallengingforasmallbusinessowner.Consumersbuyfurniturepiecesonlyoccasionall
Check-inRequirementsPassengersandtheirbaggagemustbecheckedinatleast45minutesbeforedeparturefordomesticflig
A—MoneyincomeB—FamilyneedsC—EconomicresourcesD—ProperallocationofresourcesE—State-ownedenterprises
____________(已经与那国终止了关系),Japanhadtofindanothersupplierofrawmaterials.
随机试题
下列不能作为绑定型控件来使用的是()
男性,28岁。既往体健。半小时前看足球赛大喊时突然出现左胸尖锐刀割样疼痛,伴进行性气促、呼吸困难、大汗淋漓,朋友把患者急送至急诊。查体:患者发绀,呼吸急促,左胸廓饱满,左肺叩诊鼓音,呼吸音消失,心率120/min,心律齐。下列处理上不恰当的是
四物汤可治疗的虚劳的证型是
建筑物的耐用年限有()年限(又称自然寿命)与经济耐用年限(又称经济寿命)之分。
施工导流的工作包括:①河道截流;②修建导流泄水建筑物;③修筑围堰;④基坑排水;⑤导流泄水建筑物封堵。正确的施工导流程序是()。
以下不属于物流企业提供的物流服务的是()。
你带领20个各个领域的专家到了一个孤岛上,孤岛上都是土著人。你怎么展开工作?
废品收购站收购的各种废铁、废塑料制品()。
WhenfamiliesgatherforChristmasdinner,somewillsticktoformaltraditionsdatingbacktoGrandma’sgeneration.Theirtable
Stealingabookoratoyisaminor______which,ifleftuncorrected,willgetworse.
最新回复
(
0
)