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
Solar equipment Since about 1800, near the beginning of the Industrial Revolution, coal, petroleum, and gas have been used at a
Solar equipment Since about 1800, near the beginning of the Industrial Revolution, coal, petroleum, and gas have been used at a
admin
2009-06-15
27
问题
Solar equipment
Since about 1800, near the beginning of the Industrial Revolution, coal, petroleum, and gas have been used at a rapidly increasing rate. The supply of these(51) is limited, and electric power is very scarce in many places. Some scientists believe solar energy is the only(52) which can meet the world’s enormous(53) for power. Great progress had been made in harnessing the sun. Not(54) is the sun now used in cooking, but it also supplies power for(55) things as beacon lights for ships and airplanes. It operates telephone lines, portable radios, electric clocks, hearing aids, and(56) communication satellites. Some homes and office buildings in the United States are now being(57) with solar energy.
The three most significant types of solar equipment so(58) are the furnace, the still, and the cell. Solar furnaces heat water or air,(59) is then circulated through a building to make it comfortable. Solar stills are(60) important because they can provide(61) water at a relatively cheap rate. Salt can be easily removed from sea water with a solar still.
The most highly developed is the solar cell. Some cells are so(62) that they can turn 16 percent of the energy they received from the sun into electric energy. One of the cell’s biggest advantages is(63) it can be made either small enough to carry(64) large enough to produce a current that can run an automobile. Besides, it has a very long life. It is still too expensive for the average consumer. But when ways are(65) to produce it more cheaply, we can expect its use to be widespread.
选项
A、but
B、so
C、or
D、too
答案
C
解析
与either连用只能用or,表示或者……或者……。
转载请注明原文地址:https://kaotiyun.com/show/iRFd777K
本试题收录于:
职称英语综合类B级题库职称英语分类
0
职称英语综合类B级
职称英语
相关试题推荐
TheMarriageRateinU.S.TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrialize
TheTeacher’sInfluenceupontheDevelopmentofAttitudesOfalltheareasoflearning,themostimportantisthedevelopmen
PuttingPlantstoWorkUsingthepowerofthesunisnothingnew.Peoplehavehadsolar-poweredcalculatorsandbuildingswi
TheBiologyofMusicHumansusemusicasapowerfulwaytocommunicate.Itmayalsoplayanimportantroleinlove.Butwhat
A. Differentsportsrequiredifferenttrainingprograms.B. Sciencemaybetooimportanttoday.C. Sportsequipmenthasbeenimp
Whatdoesthewritersuggestinthefirstparagraphaboutourattitudestomobilephones?Itissuggestedthatmobilephonessh
OnereasonwhythelossoflivesintheLosAngelesearthquakewascomparativelylowisthat______.Theauthor’smainpurpose
Accordingtotheauthor,informationtechnologyhasnothingpositivetosay.Thosewhocriticizedinformationtechnologiesare
BenefitPaymentstoAmericanWorkersGermanChancellor(首相)OttoVonBismarckmaybemostfamousforhismilitaryanddiploma
A.milk,meat,vegetables,etc.weredeliveredB.ithaspromotedthesalesofmanykindsofcommoditiesC.foodscanbepreserv
随机试题
某一放大电路在负载开路时的输出电压为6V,当接入2kΩ的负载后,输出电压为4V,该放大电路的输出电阻是()kΩ。
甲、乙、丙公司均系增值税一般纳税人。相关资料如下:资料一:2016年8月5日,甲公司以应收乙公司账款438万元和银行存款30万元取得丙公司生产的一台机器人,将其作为生产经营用固定资产核算。该机器人的公允价值和计税价格均为400万元,当日,甲公司收到丙公司
融资租入的固定资产,以租赁合同约定的付款总额和承租人在签订租赁合同过程中发生的相关费用为企业所得税计税基础。()
被称为心理活动警卫的是()。
依据心理活动的倾向性,一般把人的性格分为()
阅读以下文字,回答下列问题。中国称城市化过程为“城镇化”,并提出要走出一条城乡协调、工农互补的“新型城镇化”道路。但与其他国家相比,中国正在发生着人类历史上规模最大、速度最快的城市化过程,人口向城市快速转移。据统计。从1979年到2012年,中国城市化率
冬雨的妈妈对明年就要参加高考的冬雨说:如果你不想将来后悔,现在就不要虚度光阴。下面哪句话所表达的意思与上面这句话的意思不同?()
在第二中间期,埃及受到的外族入侵来自()。
设f(x)可导,且F(x)=f(x)(1+|sinx|),则f(0)=0是F(x)在x=0处可导的()条件.
Thread类中启动线程体的方法是( )。
最新回复
(
0
)