首页
登录
职称英语
A 【B1】______of the physical and chemical nature of life must begin; not on
A 【B1】______of the physical and chemical nature of life must begin; not on
游客
2023-07-16
37
管理
问题
A 【B1】______of the physical and chemical nature of life must begin; not on the Earth,: but in the Sum In fact, it is. at the Sun% very center. It is here that is to be found the source of the energy that the Sun【B2】______pours out into space as light and heat. This energy is liberated at the center of the Sun as billions upon billions of nuclei of【B3】______atoms collide with each other and fuse together to form nuclei of helium(氦). And, in doing so, it【B4】______some of the energy that is stored in the nuclei of atoms. The output of light and heat of the Sun requires that some 600 million tons of hydrogen be【B5】______into helium in the Sun every second. This the Sun has been doing for several thousands of millions of years.
The nuclear energy is released at the Sun’s center as high-energy gamma【B6】______, a form of electro-magnetic radiation like light and radio waves, only of very much shorter【B7】______. This gamma radiation is【B8】______by atoms inside the Sun, to be re-emitted at slightly longer wavelengths. This radiation, in its turn, is absorbed and reemitted.【B9】______, it passes through the X-ray part of the spectrum(频谱), eventually becoming light. At this stage, it has reached what we call the solar surface and can escape into space,【B10】______. A very small fraction of the Sun’s light and heat is emitted in such directions【B11】______. [br] 【B4】
选项
答案
releases
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2842146.html
相关试题推荐
Womennotinimmediatephysicaldangerwereconsideredprivilegedenoughandthe
______,manylawsofnatureactuallyexist.A、HavingnotdiscoveredB、Nothaving
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
ManandNatureThebalanceofnatureisadelicatesystemo
ManandNatureThebalanceofnatureisadelicatesystemo
ManandNatureThebalanceofnatureisadelicatesystemo
ManandNatureThebalanceofnatureisadelicatesystemo
ManandNatureThebalanceofnatureisadelicatesystemo
ManandNatureThebalanceofnatureisadelicatesystemo
随机试题
BecauseAmericanparentsbelievethatknowledgeleadstoameaningfullife,they
Onebyone,museumsacrosstheUnitedStateshavebeenimposingbansonusingse
WhatwilltheclassdoonThursday?[br][originaltext]Iamcertainthata
Indiaistheworld’sbiggestgoldconsumer,butthecountry’spassionforth
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
上海证券交易所接受()方式的市价申报。A:最优五档即时成交剩余撤销申报B:对手
聋哑人甲因盗窃被H县公安局立案侦查,甲委托律师乙担任其辩护人。下列关于该案的说法
杨某,女,19岁,咳嗽、有脓性痰,并伴有胸痛;发热39℃;肺闻及湿性罗音;WBC
B鞋业有限公司(330324XXXX)凭加工贸易手册(C29328420XXX)
(2018年真题)关于巴塞尔协议的说法,错误的是()。A.巴塞尔协议是国际货币
最新回复
(
0
)