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
27
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
TheotherdayIwaslisteningtoaChristianradioprogramonthewaytothe
A.只受剪力 B.只受弯矩 C.同时受弯矩、剪力 D.同时受弯矩、剪力和轴
国际上,将BIM模型的深度分为几级?()A.3 B.4 C.5 D.6
常见人体水解酶对其天然底物K值A.与其他合成底物的K值相同 B.<10mol/
引起牙齿病理性移位的主要因素是()A.急性牙周膜炎 B.女性激素水
曹操《短歌行》原文 对酒当歌,人生几何!譬如朝露,去日苦多。 慨当以
以下有关处方调配要点的叙述中,最关键的事项是A:认真审核处方 B:准确调配药品
例行巡视中,对于引流线应检查()。(A)伸缩节无变形、散股及支撑螺杆脱出现象。
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
某县人口50万,约80%居民以河水为饮用水,该县设有一传染病科的综合医院,其污水
最新回复
(
0
)