首页
登录
职称英语
Since about 1800, near the beginning of the industrial revolution, coal, pet
Since about 1800, near the beginning of the industrial revolution, coal, pet
游客
2023-07-22
21
管理
问题
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【C1】______is limited and electric power is very【C2】______in many places. Some scientists believe solar energy is the only【C3】______that can meet the world’s enormous【C4】______for power. Great progress had been made harnessing the sun. Not only is the sun now used in cooking, 【C5】______it also supplies power for【C6】______things as beacon lights for ships and airplanes. It【C7】______telephone lines, portable radios, electric clocks, hearing aids, and even communication satellites. Some homes and office buildings in U. S. A. are now being【C8】______with solar energy. The three most【C9】______types of solar equipment so far are the furnace, the still(蒸馏器)and the cell. Solar furnaces heat water or air,【C10】______is then circulated through a building to make it comfortable. Solar stills are【C11】______important because they can provide【C12】______water at a relative cheap rate. Salt can easily be【C13】______from sea water with solar still. The most highly developed type of solar【C14】______equipment is the solar cell. Some cells are so【C15】______that they can turn 16% of the energy they receive from the sun【C16】______electric energy. One of the cell’s biggest advantages is【C17】______it can be made either small enough to carry【C18】______large enough to produce current that can run an automobile. Besides, it has a very long life. It is still too expensive for the【C19】______consumer but when ways are【C20】______to produce it more cheaply, we can expect its use to be widely-spread. [br] 【C1】
选项
A、materials
B、metals
C、reserves
D、fuels
答案
D
解析
从前文的coal,petroleum和gas得知这些均属燃料,故选fuel。reserve指“储量”,此处不合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/2858535.html
相关试题推荐
Longbusridesareliketelevisionshows.Theyhaveabeginning,amiddle,and
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
Chemistrydidnotemergeasascienceuntilafterthescientificrevolution
TherearemanytheoriesaboutthebeginningofdramainancientGreece.The
TherearemanytheoriesaboutthebeginningofdramainancientGreece.The
TherearemanytheoriesaboutthebeginningofdramainancientGreece.The
TherearemanytheoriesaboutthebeginningofdramainancientGreece.The
Opinionpollsarenowbeginningtoshowanunwillinggeneralagreementthat,
随机试题
A—phonebookB—toolsC—calculatorD—messagesavingE—pho
[originaltext]Theworld’ssmartestadolescentsinmathematicsandsciencea
1954年9月我国召开了第一届全国人民代表大会,标志着以人民代表大会为基础的
56岁妇女,绝经4年,阴道浆液血性分泌物伴臭味3个月,查宫颈正常大、光滑,子宫稍
只要一个国家的决策者,真心希望发展市场经济,愿意按照资本创造与流通的规律办事,能
Thechangeinthatvillagewasmiraculou
葡萄胎病理改变的叙述不正确的是A.病变局限于子宫内 B.间质水肿 C.发生远
人的身心发展是在()过程中实现的。
(2020年真题)某项目期初投资1000万元,年利率为6%,预计8年后全部回收,
某公司承建一座跨河城市桥梁,基础均采用φ1500mm钢筋混凝土钻孔灌注桩,设计为
最新回复
(
0
)