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、How to produce pollution free bus. B、How to prevent our environment from being polluted. C、Whether to ride a passenger bus or
A、How to produce pollution free bus. B、How to prevent our environment from being polluted. C、Whether to ride a passenger bus or
admin
2012-10-30
50
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. Is your car in the shop?
W: No. I’ve just been thinking a lot about the environment lately. I think the air will be a lot cleaner if we all use public transportation when we could.
M: 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 going to do? Install pollution filters in the 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 gets sprayed on the certain part of the engine.
M: An insulator?
W: Yeah. Actually, what it does is to reflect back the heat of burning fuel. So the fuel will bum more completely.
M: Sounds like people should all go out and get this stuff to spray their car engines.
W: Well, it’s not really that easy. You first have to heat the material over 10,000 degrees and then, well, you get the idea. It’s not something you or I can do ourselves.
选项
A、How to produce pollution free bus.
B、How to prevent our environment from being polluted.
C、Whether to ride a passenger bus or a private car.
D、How to reduce the pollutants produced by bus.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/Cp57777K
0
大学英语四级
相关试题推荐
It’sofficialthatmarriedpeoplearehealthier,oratleasttheythinktheyare.AnAmerican【B1】______ofover100,000peoples
A、Toprovethatfootballistheworld’smostimportantsport.B、ToshowthatBrazilisbetterthanallothers.C、TocompareScot
A、Savetimebyusingacomputer.B、Buyherowncomputer.C、BorrowMartha’scomputer.D、Stayhomeandcompleteherpaper.B推理判断。
Mostpeopleareawarethatoutdoorairpollutioncandamagetheirhealth,butmanydonotknowthatindoorairpollutioncanals
Mostpeopleareawarethatoutdoorairpollutioncandamagetheirhealth,butmanydonotknowthatindoorairpollutioncanals
TheSixthSenseWhenyouwereachild,didyoueverwonderhowyourmotherknewwhenyouwerewritingonthewallwithcrayo
Themaidwasexecutedafterbeingconvicted______murderthoughherguilthadnotbeencompletelyestablished.
Redisthe______colorofaweddinggowninChinaalthoughsomebridesliketodressinwhite.
A、TVisextremelysuperficial.B、Newsreportsdon’ttellanything.C、Newsshowsarenotpresentingthenews.D、TVisgoodatpre
Althoughhestillhassomeproblemstoface,______hisworkhasbeensuccessful.
随机试题
在几种胶结类型中,接触胶结的孔隙度()孔隙胶结。
斯巴达教育的目的是培养()
女性,62岁,乏力、易疲倦,活动后气短3个月,大、小便正常。偏吃素食。查体:面色苍白,皮肤干燥、指甲变平,心肺正常。血象:WBC4.9×109/L,RBC3.5×1012/L,Hb62g/L,PLT390×109/L,铁蛋白3μg/L,诊断为缺铁性贫血,口
患者,男,30岁。腹部砸伤5小时。查体:四肢湿冷,腹肌紧张,全腹压痛,反跳痛,有移动性浊音,肠鸣音消失。该患者目前应进行的处理不包括
(2006年)下列分子中,键角最大的是()。
采用组态方式编写程序的语言称为( )。
下列关于贷款的说法,正确的是()。
甲公司的经营杠杆系数为3,财务杠杆系数为2,固定的财务费用为20万元,无优先股。则甲公司的固定生产经营成本为()万元。
下列成语中,没有错别字的一项是()。
RogerRosenblatt’sbookBlackFiction,inattemptingtoapplyliteraryratherthansociopoliticalcriteriatoitssubject,succe
最新回复
(
0
)