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
2024-01-17
31
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 verysmall 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/3371357.html
相关试题推荐
Strongwindsmay______awaythesoilontheearthsurface.A、blowB、putC、getD、le
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Student:______afewquestionsonthesubjectofsolarenergy.Teacher:Ok,goah
Withoutthesun’slight______theearth’ssurface,nolifecouldexistontheear
Wedonotoftenconsiderhowmuchenergygoesintocreatingcomfortslikeho
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetour
随机试题
Elephantsarethebiggestanimalsthatliveonland(somewhalesarebiggert
Thefieldofmedicinehasalwaysattracteditsshareofquacksandcharlatan
Whatkindofwhiskydoesthemanexpecttobeoffered?[br][originaltext]W:Go
AnAmericanweddingbeginswithengagement.Traditionally,ayoungmanasksth
D
A.酸性磷酸染色强阳性 B.骨髓铁染色细胞内,外铁增加,有较多环形铁粒幼细胞
磺基水杨酸法测定尿蛋白,错误的说法是A:高浓度尿酸可导致假阳性B:有机碘造影剂
求助者一般资料:母林,女,19岁,高中学生,班长。 求助问题:因为理科成绩很
水准测量的方法有()。A.等高法 B.高差法 C.三角法 D.解析法
女,18岁,上唇红肿疼痛5天,加重伴寒战、高热、头痛2天.检查:表情淡漠,体温3
最新回复
(
0
)