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
In addition to the established energy sources such as gas, coal, oil and nuclear, there are a number of other sources that we ou
In addition to the established energy sources such as gas, coal, oil and nuclear, there are a number of other sources that we ou
admin
2011-01-08
60
问题
In addition to the established energy sources such as gas, coal, oil and nuclear, there are a number of other sources that we ought to consider. Two of these are hydroelectric and tidal power.
These two sources are【21】______ in that they are both renewable. 【22】______ , hydropower is more widely used than tidal. In【23】______ , a substantial amount of electricity is already produced in HEP (hydroelectric power)stations worldwide, 【24】______ tidal stations are still in the very early【25】______ of development.
As far as geographical【26】______ is concerned, HEP projects are to be found on lakes and rivers, while tidal【27】______ are constructed only at river mouths where tidal【28】______ is great. Unfortunately these are【29】______ in number. At present HEP stations are found mainly in Norway, Canada, Sweden and Brazil, whereas tidal plants are in【30】______ in France, Russia and China.
As regards capital【31】______ , both require very high investment. On the other hand, generating【32】______ are quite low in both cases. In fact, a large scale HEP plant is capable of producing power more【33】______ than conventional sources, such as coal, oil and nuclear plants. Tidal power also compares【34】______ with nuclear and oil generated electricity, 【35】______ the amount of money on production. 【36】______ HEP stations, tidal constructions have a long life【37】______ . It is estimated that they can operate for over 100 years. With respect to【38】______ of supply, tidal stations【39】______ from HEP ones in that they often can only supply power【40】______. HEP stations, however, pro vide a constant supply of electricity.
【29】
选项
A、small
B、few
C、rare
D、scarce
答案
A
解析
这里指的是潮汐发生频率高的河流入口处的数量很少;四个选项中只有small可以修饰number,表示数量少,故选A。
转载请注明原文地址:https://kaotiyun.com/show/A2xd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Somepeoplewerejustborntorebel;CharlesDarwinwasoneofthem.【21】______NicholasCopernicus,BenjaminFranklinandBillGa
Somepeoplewerejustborntorebel;CharlesDarwinwasoneofthem.【21】______NicholasCopernicus,BenjaminFranklinandBillGa
WhatdowelearnabouttheuseofsolarenergyintheUSA?
Thedestructionofournaturalresourcesandcontaminationofourfoodsupplycontinuetooccur,largelybecauseoftheextreme
Somecitiesgrowverylargebecauseoftwoimportantreasons.First,theremaybeimportantnaturalresourceslikewood,gas,oi
Somecitiesgrowverylargebecauseoftwoimportantreasons.First,theremaybeimportantnaturalresourceslikewood,gas,oi
Whichwordbestdescribesthelawyers’predictionofthechangeindivorcerate?
Whichwordbestdescribesthelawyers’predictionofthechangeindivorcerate?
随机试题
简述普利策的办报特点。
Ifinditwholesometobealonethegreaterpartofthetime.Tobeincompany,evenwiththebest,issoonwearisomeanddissip
A.暂时制动B.牙间结扎C.颌间结扎D.切开复位,骨间固定E.暂不处理,随访
题25—29:某地上16层、地下1层的现浇钢筋混凝土框架一剪力墙办公楼,如图1-22所示。房屋高度为64.2m,该建筑地下室至地上第3层的层高均为4.5m,其余各层层高均为3.9m,质量和刚度沿高度分布比较均匀,丙类建筑,抗震设防烈度为7度,设计基本地震加
对企业事业单位的承包经营、承租经营所得,以某一纳税年度的(),为应纳税所得额。
劳务派遣是指由劳动派遣单位与劳动者订立劳动合同。()
社区建立的支持网络主要包括()。
下面历史典故与相应的历史人物对应正确的一组是:
“每当我们给个人一种影响的时候,这影响必定同时应当是集体的一种影响。相反地,每当我们设计集体的时候,同时也应当成为对于组成集体的每一个个人的教育”。这反映了马卡连柯的()。
AtallGreenwellGeneralHospitallocations,visitorsandvisitinghourswillbedecidedbythepatientandhealthcareteampri
最新回复
(
0
)