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
63
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、BecauseBrazilwontheWorldCup.B、BecausetherewasalwayswonderfulfootballmatchesinBrazil.C、Becausethemostfamousf
A、Salespeoplemustbepersistent.B、Salespeopledon’tsellenough.C、Salespeopleselltoomuch.D、Salespeopleareinconsiderate.
A、Childrenunder16B、Menbetween20and33yearsoldC、WomenD、OldpeoplewithseriousdiseasesC细节题,文中明确出现原句“Thetargetgroup
Voluntarylearninginorganizedcoursesbymaturemenandwomeniscalledadulteducation.Sucheducationis【36】tomakepeoplea
A、Thebikeisexpensive.B、Thetiresaregoodbutnothingelse.C、Thebikeisbroken.D、Thebikeisworthwhile.D男士三十美元买了一辆二手自行车
A、Changesinchildren’srearing.B、Changesinmen’sandwomen’sroles.C、Changesinmen’sroleinfamilylife.D、Changesinwome
A、Expensiveones.B、Cheapones.C、Giftsmadecarefully.D、Giftsthatwon’tlast.C选项中的Expensive/Cheapones,Giftsthatwon’tlast
Infuturetradethekeydevelopmenttowatchistherelationshipbetweentheindustrializedandthedevelopingnations.TheThir
随机试题
分批法的适用范围具体包括:产品的批次易于划分而且各批产品成本需要分别计算;根据客户的订单进行生产,产品品种类不稳定的小规模企业;________;企业进行新产品开发时的试生产。
患者女,21岁。因反复下肢紫癜、鼻出血、月经量增多1年来诊。检测白细胞数4.2×109/L,血红蛋白82g/L,血小板26×109/L,网织红细胞0.16;Coombs试验直接(+)、间接(一),ANA(一);骨髓检查示增生明显活跃,红系占0.56,e核细
在绘制等声级线时,等声级线的间隔为()。
下列关于实际利率和名义利率的说法中,错误的是()。
Zubin公司销售额和销货成本下降,应收账款增加,存货未变。如果其他账户保持不变,那么上述所有变化将会怎样影响应收账款周转率和存货周转率?
《宗教事务条例》规定,宗教活动场所经批准筹备并建设完工后,应当向所在地的()申请登记。
【C1】______.Inthe18thand19thcenturies,industrialization,literacy,andurbanizationbroughtaboutnewtechniquesandforma
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
查询可以作为______、______和______的数据源。
【26】【39】
最新回复
(
0
)