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
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydrop
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydrop
admin
2010-04-24
67
问题
Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydropower (water), solar, wind, geothermal, and biomass. Renewable energy’s impact on the world’s energy picture is significant. Many important events have occurred during the history of using renewable sources to generate electricity--but the overall consumption from renewable energy sources has declined by about 15 percent from their I996 peak to about 6 quads in 2005.
The use of renewable energy is not new. Five generations (125 years) ago, wood supplied up to 90 percent of our energy needs. Due to the convenience and low prices of fossil fuels, wood use has fallen. Now, the biomass which would normally present a disposal problem is converted into electricity (e.g., manufacturing wastes, rice hulls, and black liquor from paper production).
Historically, low fossil fuel prices, especially for natural gas, have made growth difficult for renewable fuels. The deregulation and restructuring of the electric power industry could have a major impact on renewable energy consumption. Demands for cheaper power in the short term would likely decrease demand for renewable energy, while preferences for renewables included in some versions of proposed electricity restructuring legislation would breathe new life into this industry.
Use of renewables in the United States is not currently expected to approach that of the major fuels, and due to their limitatious (e.g., their intermittent nature-cloudy days have no solar gain, quiet days mean no wind blows to drive wind turbines, dams are primarily for flood control, so hydroelectricity production varies as dams’ water levels change), renewables may never provide "the" answer to all energy problems. Around the world, renewable energy is proving to be of great value.
In 2005, about 6.1 Quadrillion Btu (Quads) of U.S. energy came from renewable fuels. Each of the energy sources we use is measured, purchased, and sold in a different form. Many units of measurement are used to measure the energy we use each day.
Which of the following is INCORRECT?
选项
A、Renewable energy has become the main form of energy in the US.
B、Renewable energy include solar power, geothermal and hydropower.
C、There are still problems remaining to be solved in the use of renewable energy.
D、Renewable energy is valuable.
答案
A
解析
细节理解题。对应文中第四段Use of renewables in the United States is not currently expected to approach that of the major fuels 可得A正确。
转载请注明原文地址:https://kaotiyun.com/show/y22K777K
0
专业英语四级
相关试题推荐
Agricultureisthecountry’schiefsourceofwealth,wheat_____byfarthebiggestcerealcrop.
OfficialssaywaterlevelsalongtheBrahmaputraRiverstillareatdangerouslevelsalthough______.
ThePonyExpressIntheUnitedStatestoday,wecansendaletterfromcoasttocoastinjustafewdaysforwellunderhal
Aneedforbeauty,lightness,corrosionresistance,orotherspecificpropertiesmustbepresentbeforeplasticcanbeconsidere
OxfordUniversityscientistswillexperimentonhundredsofpeopleinahidtounderstandhowthebrainworksduringstatesofc
Thefitnessmovementthatbeganinthelate1960sandearly1970scenteredaroundaerobicexercise.Millionsofindividualsbeca
Itisusualtoclassifytypesofproductionasjobproduction,batchproductionandflowproduction.Injobproduction,products
Itwasunusualforthere______sofewstudentsintheclassroom.
TheannualDecembercommercialsaroundbuyingandexchanginggiftsdon’tusuallyincludeanin-depthdiscussionofthetactand
Davidprefers______.
随机试题
肾小球滤过功能主要取决于
腹部叩诊出现移动性浊音阳性的临床意义是()
A、利多卡因B、奎尼丁C、普罗帕酮D、普萘洛尔E、胺碘酮可引起头痛、头晕、耳鸣、腹泻、恶心、视物模糊等,严重者可晕厥或猝死
男性,30岁,发热10天,高达39.6℃,伴头痛,无咳嗽,无呕吐、腹泻,曾按“感冒”治疗,无好转。查体:贫血貌,表情淡漠,脉搏64次/分,肺未见异常,肝肋下未及,脾肋下刚触及。血白细胞计数3.2×109/L,中性粒细胞0.67,淋巴细胞0.33,胸片未见异
建设工程项目的信息管理是通过对各个系统、各项工作和各种数据的管理,使项目的()能方便和有效地获取、存储、存档、处理和交流。
某酒厂(增值税一般纳税人)生产粮食白酒,同时也生产啤酒。2019年6月该厂的生产销售情况如下:(1)外购粮食制作的食用酒精,增值税专用发票上注明金额20万元。外购生产白酒的检测仪器,增值税专用发票上注明金额40万元。(2)向农业生产者收购生产啤酒的大麦
接待工作三项主要任务是安排好来宾的工作事宜、生活服务和()。
社会工作者小嘉最近在写一项社区活动策划,()是有效进行活动策划的前提。
《学记》指出“独学而无友,则孤陋而寡闻”“相观而善”。这就启示我们在教学中要注意运用()。
以太网协议规定帧的最大重发次数为()。
最新回复
(
0
)