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
2024-02-17
5
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] 【B6】
选项
答案
radiation
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3458414.html
相关试题推荐
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhave
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhave
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhave
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhave
Thirtyyearsago,anyoneblaminglonelinessforphysicalillnesswouldhave
[originaltext]Throughouthistorymanhaschangedhisphysicalenvironmenti
______,manylawsofnatureactuallyexist.A、HavingnotdiscoveredB、Nothaving
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
Stressmaybedefinedasanemotional,intellectual,orphysicalreactionto
随机试题
[originaltext]Lastweek,aUnitedNationsreportsayshumansareverylikel
MarineBiology[img]2014m9s/ct_etoefm_etoeflistz_0390_20149[/img][br]According
患者,男性,60岁,因第二度Il型房室传导阻滞入院,曾发作阿-欺综合征一次,则该
全国政协把为“十三五”规划议政建言圈定为2015年履职重点,委员们的议题涉及新常
患者,男,64岁,阵发性腹部绞痛伴腹胀、恶心呕吐5小时来院急诊。查体:腹稍胀,听
当社会总供给大于总需求时,政府可实施的财政政策措施有( )。 Ⅰ.增加财政补
随着城市的进一步发展,某市的地下管线越来越多。由于历史原因,早期的地下管线没有管
(2021年真题)残疾军人张某退役后被安置在甲县某事业单位工作,根据《中华人民共
辩证唯物主义认为,人的发展是个体内在因素与()在个体活动中相互作用的结果。 A
肝硬化患者肝功能减退的临床表现不包括A.牙龈出血 B.脾大 C.黄疸 D.
最新回复
(
0
)