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
19
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/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
[audioFiles]audio_ehbm_j18001(20082)[/audioFiles]A、$10.B、Size22.C、15grams.
INFORMATIONSECURITYSPECIALISTNOTE:Pleasesubmityourres
Writeonthefollowingtopic.TheNationalBureauofStatisticshasrecentlyrel
接报是实施救援工作的第一步()
如果运输需求对农业总产值的弹性系数大于1,则意味着()。A.运输需求量大于农业
麻醉性镇痛药的经典代表是()A.舒芬太尼 B.哌替啶 C.吗啡 D.芬
共用题干 用药指导的内容涉及用药注意事项、禁忌证、用药的适当方式和时间、适当的
一个边长为1的正方体能刨成的最大的正四面体体积为:()A. B. C.1
当事人对保证担保的范围没有约定或者约定不明确的,保证人应当对全部债务承担责任。(
(八)中国矿产钢铁有限责任公司(110891××××)订购进口一批热拔合金钢制无
最新回复
(
0
)