首页
登录
职称英语
All the useful energy at the surface of the earth comes from the activity of
All the useful energy at the surface of the earth comes from the activity of
游客
2024-01-16
24
管理
问题
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds creatures and mankind. Each year it provides men with two hundred million tons of grain and nearly ten million tons of wood, coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected by this season’s plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun fails as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun’s outer layer, and much of this energy that is directed towards the earth never arrives. About nine tenths of it is absorbed by the atmosphere of the earth. In fact, the earth itself gets only one half millionth of the sun’s entire output of radiant energy. [br] Of the sun’s total output of radiant energy, the earth receives
选项
A、one tenth
B、one millionth
C、all that comes from the surface of the sun
D、a very small portion
答案
D
解析
事实细节题。文中最后一句说,事实上,地球只接收了太阳所有辐射能量的百万分之零点五,所以是相当小的一个比例。
转载请注明原文地址:https://tihaiku.com/zcyy/3367232.html
相关试题推荐
Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityof
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetour
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetour
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetour
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
随机试题
WhoLives?WhoDies?WhoDecides?A)SomehavecalleditaRi
Averyinterestingandimportantdevelopmentinscienceisadevicecalledl
Childrenhavebeensaidtohavebrain-injuredchildsyndrome,hyperactive(极
铭牌标志脱落,或虽有铭牌标志,但标志上生产商名称无法识别、灭火剂名称和充装量模糊
深井井点降水的优点是()。A.排水量大 B.不受吸程限制,排水效果好
能够反映施工工序在施工中的机动时间的进度计划图是( )。A.甘特图 B.直方
企业管理状况风险主要体现在()。A.最高管理者独裁,领导层不团结,高级管理层之间
国外一些发达国家多实行教师许可证制度,我国亦于1993年明确规定国家实行教师资格
目前,我国信托市场的供给主体主要是( )。A.个人 B.商业银行 C.信托
某建设工程项目以固定单价合同形式发包,在施工过程中主要建筑材料的价格上涨了,承包
最新回复
(
0
)