首页
登录
职称英语
Renewable energy sources can be replenished in a short period of time. The
Renewable energy sources can be replenished in a short period of time. The
游客
2024-10-23
1
管理
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. [br] Why did wood use fall several generations ago?
选项
A、Because wood occupied 90 % of mankind’s energy needs.
B、Wood supply was insufficient.
C、Fossil fuels have some advantages.
D、Bionass presented a disposal problem.
答案
C
解析
细节理解题。对应文中第二段Due to the convenience and low prices of fossil fuels,wood use has fallen.因此C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3814497.html
相关试题推荐
Renewableenergysourcescanbereplenishedinashortperiodoftime.The
Renewableenergysourcescanbereplenishedinashortperiodoftime.The
Accordingtotheexpert’sstudy,thelevelofhappinessinwhichperiodoflife
Theperiodfrom1780totheCivilWarwasmarkedbyatremendousincreasei
AbreakthroughintheprovisionofenergyfromthesunfortheEuropeanEco
AbreakthroughintheprovisionofenergyfromthesunfortheEuropeanEco
AccordingtoRogerNoriega,theturbulentperiodinLatinAmericanwascausedby
AccordingtoRogerNoriega,theturbulentperiodinLatinAmericanwascausedby
Theenergy______bythechainreactionistransformedintoheal.A、entrustedB、r
Themourningperiodstartsfrom______.[br][originaltext]Armenia’spres
随机试题
ImaginesendingelectronicmailtoyourfriendintheU.S.ordiscussingyou
新文化运动开始于()A.1915年 B.1916年 C.1917年 D.1
中共产党第十九次全国代表大会,是在()的决胜阶段、中国特色社会主义(
内部审计发现供应商违反了保密规定,进而怀疑公司在信息安全方面存在漏洞。尽管内部审
小张拟认购开放式基金,在开立基金账户和资金账户后于20×8年6月11日提交了认购
持续性蛋白尿常提示A、肾小管病变 B、肾肿瘤 C、剧烈运动后 D、直立体位
原发性肝癌论述中,不对的是A.肝区疼痛多为首发症状 B.男性比女性多见
某写字楼建设项目,建设单位与施工单位签订土建和装饰装修施工合同,建设单位委托监理
关于金刚烷胺治疗帕金森病作用描述,错误的是A.抑制DA再摄取B.直接激动DA受体
为防止血管扩张、促进毒物吸收。应用1%氯化钠溶液洗胃应该避免的是A.溶液事先加热
最新回复
(
0
)