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
31
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
Thekeytoanysuccessfulgaragesale(家庭旧物出售)istogetthewordout.Thebest
[originaltext]Weallscreamforwaterwhenthirsty.Butdoyouknowinvery
对“避险车道”是指在长陡下坡路段行车道外侧增设的供速度失控车辆驶离正线、安全减速的专用车道。右侧标志的含义是避险车道,提醒前方右侧500米有避险车道。
在某建设项目投资构成中,设备及工器具购置费为1000万元,建筑安装工程费为150
下列关于阿尔兹海默症说法错误的是A、多在50岁以后起病 B、随年龄增长,其发病
致病菌常为大肠埃希菌的疾病是 A.急性膀胱炎B.急性肾盂肾炎C.无症状细菌
我国个人所得税税率按各应税项目分别采用()两种形式。 A.超额累退税率B.超
下列由航空公司提供的产品和服务中,属于“整体产品”概念中“核心利益”层次的是(
(2020年真题)资产负债表中“短期借款”项目期末余额应根据“短期借款”总账科目
下列施工现场的主要设务用电负荷中,属于一类用电负荷的是()A、基坑降水B、混凝
最新回复
(
0
)