What is the one reason astronomers make long time exposures?

admin2015-03-11 43

问题 What is the one reason astronomers make long time exposures?

选项 A、To spend less time at their telescopes.
B、To overcome the problem of weak light.
C、To take more photographs.
D、To photograph astronomical objects without using a telescope.

答案B

解析细节题。文章后面讲到由于大部分天体距离很远，所以我们能捕捉到的它们所发出的光线也很微弱，但如果用望远镜充当照相机就可以进行长时间曝光，以此将物体拍下来。故B项正确。

转载请注明原文地址:https://kaotiyun.com/show/yWHK777K

专业英语四级

相关试题推荐

BilingualeducationiscontroversialintheUnitedStates.【C1】______,agrowingbodyofresearchshowsthat【C2】______speakingt
Ifyoudidn’tknowanybetter,youmightmistaketheNewarkEarthworksinsouthernOhiofortheproductofsomegiantheavenspi
A"talkingkitchen"teachesstudentshowtocookFrenchcuisineandspeakFrench.ResearchersatNewCastleUniversityintheUn
ProfessorJamessuggestedthathisstudents______acompositionaboutairpollution.
HowlongdidEthbellteachminoritystudents?
ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat
Whichofthefollowingisseenasthecauseofclassdifferencesinthepast?Accordingtothepassage,whichofthefollowing
Whichofthefollowingisseenasthecauseofclassdifferencesinthepast?Thewriterseemstosuggestthatthedescription
Hardlyamonthgoesbywithout______ofanothersurveyrevealingnewdepthsofscientificilliteracyamongUScitizens.
Accordingtothepassage,welearnthatthepopulationofilliteracyinAfricais

随机试题

构成南北合作实践、替代《洛美协定》的协定是__________。
水文地质参数越流系数的测定方法为()。
下列关于欧洲债券的描述正确的是()。
企业下列已作为开支的项目，需要进行纳税调增处理的有()。
国内某大型钢铁集团人力资源管理部门近日通过调查发现：企业内部正弥漫着一种低落的情绪，这主要跟今年上半年度的绩效改革有关。老员工满腹牢骚，对新颁布的绩效改革(男50岁退休，女45岁退休)严重抹杀其贡献感到不满；新员工忧心忡忡(公司规定：末位淘汰率由原来的8％
下列关于质量改进“拟定对策并实施”中工具使用的表述正确的有()。
Withmobilephonesnowdoublingaseverythingfromcamerastomusicplayers,awirelesstechnologyknownasBluetoothisinalo
某电子产品一月份按原定价的80％出售，能获利20％，二月份由于进价降低，按同样原定价的75％出售，却能获利25％，那么二月份进价是一月份进价的百分之()．
设a≠b，证明：
阅读下列说明和图，回答问题1至问题4，将解答填入答题纸的对应栏内。【说明】某公司欲开发招聘系统以提高招聘效率，其主要功能如下。(1)接受申请。验证应聘者所提供的自身信息是否完整，是否说明了应聘职位，受理验证合格的申请

最新回复(0)

What is the one reason astronomers make long time exposures?

专业英语四级

BilingualeducationiscontroversialintheUnitedStates.【C1】______,agrowingbodyofresearchshowsthat【C2】______speakingt

Ifyoudidn’tknowanybetter,youmightmistaketheNewarkEarthworksinsouthernOhiofortheproductofsomegiantheavenspi

A"talkingkitchen"teachesstudentshowtocookFrenchcuisineandspeakFrench.ResearchersatNewCastleUniversityintheUn

ProfessorJamessuggestedthathisstudents______acompositionaboutairpollution.

HowlongdidEthbellteachminoritystudents?

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat

Whichofthefollowingisseenasthecauseofclassdifferencesinthepast?Accordingtothepassage,whichofthefollowing

Whichofthefollowingisseenasthecauseofclassdifferencesinthepast?Thewriterseemstosuggestthatthedescription

Hardlyamonthgoesbywithout______ofanothersurveyrevealingnewdepthsofscientificilliteracyamongUScitizens.

Accordingtothepassage,welearnthatthepopulationofilliteracyinAfricais

构成南北合作实践、替代《洛美协定》的协定是__________。

水文地质参数越流系数的测定方法为()。

下列关于欧洲债券的描述正确的是()。

企业下列已作为开支的项目，需要进行纳税调增处理的有()。

下列关于质量改进“拟定对策并实施”中工具使用的表述正确的有()。

Withmobilephonesnowdoublingaseverythingfromcamerastomusicplayers,awirelesstechnologyknownasBluetoothisinalo

某电子产品一月份按原定价的80％出售，能获利20％，二月份由于进价降低，按同样原定价的75％出售，却能获利25％，那么二月份进价是一月份进价的百分之()．

设a≠b，证明：

BilingualeducationiscontroversialintheUnitedStates.【C1】,agrowingbodyofresearchshowsthat【C2】speakingt