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
57
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
水、电解质是人体细胞进行正常代谢所必须的物质,借以维持人体生命和脏器的功能。调节
扁鹊的医学知识十分丰富,名闻天下。为了给百姓治病,他长期游历在民间行医。他每到一
肺结核咯血的最常见原因为A.病灶出现硬结 B.病灶钙化 C.病灶形成纤维化
GOD-POD法测定血糖,如下表述正确的是A.GOD作用下生成HO,HO直接氧化
按我国现有规定,大城市是指城区常住人口在()万以上的城市。A.40 B.5
不收取房屋登记费的情形包括()。A:房屋查封登记 B:经济适用住房登记 C:
旁站见证包括关键工艺、()、关键部位和重点试验的见证。(A)关键工序(B
清算是交收的基础和保证。()
免疫荧光检查时,病损部位上皮基底膜区域出现翠绿色荧光带,提示为A.白斑 B.红
2021年3月20日,甲公司从证券市场购入乙公司股票,支付价款500万元,其中包
最新回复
(
0
)