首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
It was not“the comet of the century”experts predicted it might be Nevertheless,Kohoutek has provided a bonanza of scientific inf
It was not“the comet of the century”experts predicted it might be Nevertheless,Kohoutek has provided a bonanza of scientific inf
admin
2015-03-02
24
问题
It was not“the comet of the century”experts predicted it might be Nevertheless,Kohoutek
has provided a bonanza of scientific information.It was first spotted 370 million miles from Earth,by an astronomer who was searching the sky for asteroids,and after whom the comet was named Scientists who tracked Kohoutek the ten months before it passed the Earth predicted the comet would be a brilliant spectacle But Kohoutek fell short of these predictions,disappointing millions of amateursky watchers,when it proved too pale to be seen with the unaided eye Researchers were delighted nonetheless with the new information they were able to glean from their investigation of the comet.Perhaps the most significant discovery was the identification of two important chemical compounds methyl cyanide and hydrogen cyanide--never before seen in comets,but found in the far reaches of interstellar space This discovery revealed new clues about the origin of comets.Most astronomers a gree that comets are primordial remnants from the formation of the solar system,but whether they were born between Jupiter and Neptune or much farther out toward interstellar space has been the subject of much debate If compounds no more complex than ammonia and methane,key components of Jupiter,were seen in comets,it would suggest that comets form within the planetary orbits. But more complex compounds,such as the methyl cyanide found in Kohoutek,point to formation far beyond the planets;there the deep freeze of space that kept them unchanged
Before the investigation of Kohoutek.where had methyl cyanide been known to exist?
选项
A、,In comets
B、 On asteroids
C、Between Jupiter and Neptune
D、Beyond the Earth’s solar system
答案
D
解析
根据文章中间“…methyl cyanide and hydrogen cyanide--never before seen in comets. but found in the far reaches of interstellar space”可以看出这句话是说methyl cyanide以前只是在星际空间发现过。
转载请注明原文地址:https://kaotiyun.com/show/Nuna777K
本试题收录于:
艺术硕士(艺术基础)题库专业硕士分类
0
艺术硕士(艺术基础)
专业硕士
相关试题推荐
在间接融资中,资金供求双方并不形成直接的债权和债务关系,而是分别与金融机构形成债权债务关系。()
下面不属于消费信用的基本形式是()。
下列关于股利理论的表述中,正确的是()。
2008年全球金融危机使金融系统的传导机制受到破坏,传统货币政策不能修复金融市场的信贷功能,无法阻止金融危机的进一步恶化和蔓延。为此,美国等发达国家以及发展中国家相继启动了非常规货币政策工具,对通货膨胀和失业率等货币政策最终目标进行直接干预。请回答以下问题
金融创新导致传统银行业务的衰落,表现为传统银行业务规模和赢利能力的降低。请分析为什么?银行业应对金融创新的措施有哪些?[对外经济贸易大学2011研]
机构型监管与功能型监管[中南财经政法大学2007研]
Inpreviousgeneration,youngpeoplewereundertheirparents’control;nowtheteenagechildrenoftheWest’srichestgeneration
戏曲舞台上表现策马飞奔的表演程式称为()。
B组任选一题,论述字数在600字左右简论中国戏曲艺术的民间性特点。
Solongasteachersfailtodistinguishbetweenteachingandlearning,theywillcontinuetoundertaketodoforchildrenthatw
随机试题
某商业银行违反审慎经营规则.造成资本和资产状况恶化,严重危及稳健运行,损害存款人和其他客户合法权益。对此,银行业监督管理机构对该银行依法可采取下列哪些措施?
简述大型企业应树立的战略思想。
国家
A.B.1.5λminC.2.5λminD.0.08~0.6AE.3.5λmin医用X线波长范围是
按照土地权利的不同,土地权属来源可分为()。
电气线路的保护措施主要有()。
根据《企业会计准则》,企业提供会计信息的质量要求有( )。
“用才”是文化创意产业发展的重点。培养人才的目的是使用。应紧密围绕“使用”来优化文化创意产业人才结构,通过文化创意产业项目运作来锻炼和使用人才。对文化创意企业来说,应营造多元、平等、鼓励、创新的企业文化,为人才充分发挥才能提供良好平台。多元、宽松的企业文化
根据所给资料,回答问题。2016年末,全国内河航道通航里程12.71万公里。等级航道6.64万公里,其中三级及以上航道1.21万公里,占总里程的9.5%,比上年提高0.4个百分点。各等级内河航道通航里程分别为:一级航道1342公里,二级航道3681公里,
HowsciencegoeswrongScientificresearchhaschangedtheworld.Nowitneedstochangeitself.A)Asimpleideaunderli
最新回复
(
0
)