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
Computers may one day turn night into day—with good old, natural sunlight. Giant computer-controlled mirrors, thousands of f
Computers may one day turn night into day—with good old, natural sunlight. Giant computer-controlled mirrors, thousands of f
admin
2005-11-28
78
问题
Computers may one day turn night into day—with good old, natural sunlight.
Giant computer-controlled mirrors, thousands of feet across,【C1】______one day orbit the earth, 【C2】______sunlight onto a darkened United States.
Two scientists【C3】______NASA(National Aeronautics and Space Administration)say that 16 of these mirrors, 【C4】______ about a half mile wide, could【C5】______their reflected light at one area on earth【C6】______was about 200 miles【C7】______300 miles. That much light would equal【C8】______56 moons.
The mirror would be【C9】______high that they could【C10】______the sun’s light【C11】______the sun was shining on the【C12】______ side of the Earth. The mirrors would【C13】______thousands of miles high【C14】______the same speed as the Earth spins. That way, the mirrors【C15】______ always be over the same spot.
The aluminum-coated, plastic mirrors could be【C16】______ up and packed into a【C17】_____shuttle, according to the scientists, John Allen and John Canady. 【C18】______released a few hundred miles in【C19】______, the mirrors, powered【C20】______a solar-powered engine, could make the rest of the trip into space on their own.
Allen and Canady say that the computer-controlled mirrors could also be made to tilt slowly, so the reflected sunlight would sweep slowly along the surface of the Earth. For example, as night fell, the mirrors could be tilted to light up Boston. Later on as darkness crept slowly westward, Chicago, for example, then San Francisco could be lit up. The reflected sunlight would allow these cities to conserve electricity. And in emergencies, such as power-failures or disasters, the mirrors could light up the affected areas.
【C18】
选项
答案
Once
解析
转载请注明原文地址:https://kaotiyun.com/show/NLIO777K
0
考博英语
相关试题推荐
ElectronicCommerceAtthebeginningofthe1990s,noonehadheardoftheInternet,apartfromafewresearchersandacadem
•Lookatthestatementsbelowandthecommentsonchangemanagementontheoppositepage.•Whichsection(A,B,CorD)doeseachs
•Readthearticlebelowaboutthemanagementoforiginalthinkers,andthequestionsontheoppositepage.•Foreachquestion
•Readthearticlebelowaboutthemanagementoforiginalthinkers,andthequestionsontheoppositepage.•Foreachquestion
Readthearticlebelowaboutthewaystoimproveemployees’motivation.ChoosethebestwordtofilleachgapfromA,B,Cor
Readthearticlebelowaboutthewaystoimproveemployees’motivation.ChoosethebestwordtofilleachgapfromA,B,Cor
ThepurposeofaresumeisInwritingaresume,onehastofeelimportantabouthimself
Whatisthemostimportantaspectofamanager’sjob?AccordingtoProf.Bevan,whichitemcomesoutlastonthelistofmotivati
TipsforRunning/AttendingBusinessConferenceABringnecessarymaterialssuchasanotepadandapenBC
Readtheadvertisementbelowaboutthefeaturesofawebsite.ChoosethecorrectwordtofilleachgapfromA,BorContheopp
随机试题
一般含油()根据含油产状、含油饱满程度和含油面积来确定。
用氟离子选择性电极与Ag/AgCl电极组成测量电池:F电极中待测溶液IAg/AgCl电极,取25.00mL水样加入25.00mL总离子强度调节溶液A,测得其电池电动势为一330mV。若在A溶液中加入1mL1.0×10-3mol/L溶液,测得电
甲状腺功能亢进的主要原因是()。
下列关于水的物理现象描述正确的是()。
图示三铰拱,支座B的水平推力是()。
公司财务报表中最为重要的三大报表是( )。
下列各项关于资产期末计量的表述中,正确的有()。
(2016·河南)在“活动式教学”理论体系中,下列表述正确的是()
洋务派创办的第一个官督商办的民用企业是()。
设f(x)在[0,+∞)可导,且f(0)=0.若f’(x)>-f(x),∈(0,+∞),求证:f(x)>0,x∈(0,+∞).
最新回复
(
0
)