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
2024-03-02
68
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://www.tihaiku.com/zcyy/3499120.html
相关试题推荐
[originaltext]Well,Imanageasmallbranchofalargesuper-market,andwe
[originaltext]Well,Imanageasmallbranchofalargesuper-market,andwe
[originaltext]W:WhatisthemostpopularcomicpresentlyinJapan?Whydoyou
[originaltext]W:Helloeverybody.We’resittingjustoutsideEmmaVilleinNew
[originaltext]W:Helloeverybody.We’resittingjustoutsideEmmaVilleinNew
Thetypeofdaydreamspeoplehave,whethertheyarepleasantandhopefulor
【B1】[br]【B9】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B8】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B7】[originaltext]It’snevertooearlytosaveyourskin—oryour
【B1】[br]【B6】[originaltext]It’snevertooearlytosaveyourskin—oryour
随机试题
ThoughKimiyukiSudausedtoownasportutilityvehicle,henowtravelsby____
[originaltext]IntheU.S.today,thecostofhousingisveryhigh.Itisco
Argentina(landofsilver)wasgivenitsnameby16th-centuryexplorerswho
[originaltext]W:Maryisanunder-achievingstudent.M:Well,actually,manyst
甲状腺毒症是甲状腺素的直接毒性作用及机体对()的敏感性增高引起的一系列临床表现。
2012年,某省规模以上工业增加值10875亿元,比上年增长7.1%,月度增速从
A.氨水 B.草酸 C.KCN溶液 D.盐酸
下面是某求助者的WAIS-RC的测验结果: 多选:根据测验结果,可
在致甲亢的各种病因中,哪种最多见A.甲状腺癌 B.Graves病 C.亚急性
肝素过量引起的自发性出血的对抗药是A.氨甲苯酸 B.氨甲环酸 C.以上都不是
最新回复
(
0
)