首页
登录
职称英语
[originaltext] Most people think of astronomers as people who spend their ti
[originaltext] Most people think of astronomers as people who spend their ti
游客
2023-07-30
32
管理
问题
Most people think of astronomers as people who spend their time in cold observatories peering through telescope every night. In fact, a typical, astronomer spends most of his or her time analyzing data and may only be at the telescope a few weeks of the year. Some astronomers work on purely theoretical problems and never use a telescope at all. You night not know how rarely images are viewed directly through telescopes. The most common way to observe the skies is to photograph them. The process is very simple. First, a photographic plate is coated with a lightsensitive material. The plate is positioned so that the image received by the telescope is recorded on it. Then, the image cam he developed, enlarged and published so that many people can study it. Because most astronomical objects are very remote, the light we receive from them is rather feeble. But by using a telescope as a camera, long time exposures can be made. In this way objects can be photographed that are a hundred times tm faint to be seen by just looking through a telescope.
选项
A、The natural colors of astronomical objects can be captured.
B、The cost of equipment needed is reduced.
C、Fewer data need to be analyzed.
D、The images can be studied by different astronomers.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2882860.html
相关试题推荐
Whatdoesthepassagemainlytalkabout?[br]Whyarepeopleunabletoseeclear
[originaltext]Kidsaregoingallovertheworldwithouteverleavingtheir
[originaltext]Kidsaregoingallovertheworldwithouteverleavingtheir
[originaltext]Kidsaregoingallovertheworldwithouteverleavingtheir
[originaltext]M:Didyoufinishthatpaperforyourpoliticalscienceclass?It
[originaltext]M:Didyoufinishthatpaperforyourpoliticalscienceclass?It
[originaltext]M:Howareyournewneighbors?W:Theyseemniceenough,butthey
[originaltext]Dr.WilliamsinNewYorkcarriedoutastudyofcats,whichh
[originaltext]Acountry’slatitude,ordistancefromtheequator,hasanim
[originaltext]Acountry’slatitude,ordistancefromtheequator,hasanim
随机试题
Thoughthecharactershankerfortheirscarstofadeandbeforgotten,it’swhen
Thefirstparagraphmainlyindicatesthat______.[br]Theunderlinedword"filt
Forestisacomplexecosysteminwhichtreesarethedominantlifeform.Tre
Westerndoctorsarebeginningtounderstandwhattraditionalhealershaveal
军事巨著militarymasterpiece
Genetics,thestudyofgenes,isgainingincreasingimportance.Genescan【B1
将硬盘中的数据读入到内存中去,称为A.显示 B.读盘 C.输入 D.写盘
各种典型的涂料助剂有()。A.防沉剂、润湿剂、分散剂 B.消泡剂、催干剂、流平
女,30岁。因心悸心慌30分钟前来就诊,心电图示阵发性室上性心动过速,按压眼球及
构建中国特色现代军事力量体系是建设世界一流军队的力量基础。总体来说,就是要加快形
最新回复
(
0
)