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
2010-01-10
67
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/CTdK777K
0
大学英语六级
相关试题推荐
Itispossiblethatyourcompanyisfacingdifficultiesofwhichwearenotaware.
Asaboss,youwanttodoyourbesttorunyourorganizationeffectively.Ifyoudoyourjobwell,thenyouremployeeswilldoth
Fromthislibrarywecanborrow________manybooksaswewanttoread.
Owningamobilephonedefinitelymakeslifemoreconvenient,butyou’dbetterlimityourconversationstourgentonesandsavet
Whatarethereinoursocietynowadays?Thereare_________________.
Whenyouarewritingbusinessletters,youneedtonoticethefollowingtips:LimitThemtoOnePageBydefinition,busines
Onlywhenclassbegan________thathehadlosthisbaginthestreet.
Thecostofheatingyourhome,particularlyduringthecolderwintermonths,makesupabout60%ofenergybills.Ifyouneedan
LanceBasswasn’tabletogoonatourofspacebecauseofhealthproblems.HiltonHotelsbelievesitwon’tbolongbeforeiti
A、Selectingtwodancesjustfromwaltz,tango,andpolka.B、Settingthepatternsoftheselecteddances.C、Repeatingsomesteps
随机试题
正常睾丸切片中,不易看到的细胞是:
许某与汤某系夫妻,婚后许某精神失常。二人提出离婚,某县民政局准予离婚。许某之兄认为许某为无民事行为能力人,县民政局准予离婚行为违法,遂提起行政诉讼。县民政局向法院提交了县医院对许某作出的间歇性精神病的鉴定结论。许某之兄申请法院重新进行鉴定。下列哪些选项是正
在数字成像系统性能的客观评价上更具有价值的参量是
比较《汉书》与《史记》在思想与写作上的不同特色。
妊娠期循环系统变化正确的是
确认新生儿败血症最有意义的检查是
由( )提出的工程变更,涉及设计修改的应该与设计单位协商,并一般通过工程师发出。
根据合伙企业的有关规定,下列有关合伙企业的解散和清算说法正确的有()。
车辆:轿车
设对任意的x,总有φ(x)≤f(x)≤g(x),且
最新回复
(
0
)