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、A new fuel for buses. B、The causes of air pollution. C、A way to improve fuel efficiency in buses. D、Careers in environmental e
A、A new fuel for buses. B、The causes of air pollution. C、A way to improve fuel efficiency in buses. D、Careers in environmental e
admin
2013-05-04
51
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、A new fuel for buses.
B、The causes of air pollution.
C、A way to improve fuel efficiency in buses.
D、Careers in environmental engineering.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/CUB7777K
0
大学英语六级
相关试题推荐
Forthispart,youareallowed30minutestowriteashortessayonthetopicofHealthandLife.Youshouldwriteatleast150
Formanypeopletoday,readingisnolongerrelaxation.Tokeepuptheirworktheymustreadletters,reports,tradepublication
A、He’llfinishwritinghispresentationtomorrow.B、He’snervousbuthebelieveshe’llbebettertomorrow.C、He’snervousabout
Therichhavetraditionallypassedtheirwealthontotheirchildren.Butanincreasingnumberofbillionairesarechoosingnot
A、Toreviseitandgetabetterdraft.B、Toeditittogetherwiththeman.C、Tomakeitpublishedinthejournals.D、Tohaveit
Longlunchoutwithco-workersoralate-nightconversationwithafamilymembermightseemlikeadistractionfromotherhealth
A、ThenumberofthemintheUnitedStateswilldecrease.B、TheUnitedStateswilllosethecompetitionforthemtoBritain.C、Th
Twoyearsagothismonth,Doubledaypublishedahistoricalthrillerwithanannouncedfirstprintingof85,000andhighhopesth
ThehomeserviceindustryinBeijingisexpectedtobecomemoreattractivebothasajobandasanindustry.Sourcesatthe
随机试题
“初级、大号、万能、野生、人造”这些词是_____。
氯喹在下列哪些部位浓度高:
下列药物中,哪些药物含有儿茶酚结构
Graves病浸润性突眼主要与( )。
林某女儿高考时填报了某知名高校作为第一志愿,林某想找该校的招生人员对其已经进入该校投档线的女儿优先录取,但苦于不认识该校的招生人贝。其好友吴某知道后,主动告知林某其曾经的朋友孙某现在正是该校的招生人员,可以代为引荐。并让林某事先准备好厚礼。于是吴某带着林某
()是对企业总体框架的设计。
按照皮亚杰的观点,0~2岁儿童的思维处于()。
在长方形ABCD中,放入8个形状、大小相同的长方形,位置和尺寸如图所示(图中长度单位:厘米),则阴影部分的面积为()。
中国共产党领导的革命政权在不同时期、不同地区分别制定的婚姻法规包括()。
Booksinthelibraryarearrangedbydifferent______.
最新回复
(
0
)