What is the one reason astronomers make long time exposures?A、To spend less time

游客2023-11-05 39

问题 What is the one reason astronomers make long time exposures?

选项 A、To spend less time at their telescopes.
B、To overcome the problem of weak light.
C、To take more photographs.
D、To photograph astronomical objects without using a telescope.

答案 B

解析细节题。文章后面讲到由于大部分天体距离很远，所以我们能捕捉到的它们所发出的光线也很微弱，但如果用望远镜充当照相机就可以进行长时间曝光，以此将物体拍下来。故B项正确。

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What is the one reason astronomers make long time exposures?A、To spend less time

Youallknowthereasonswhichhaveimpelledmeto______thethrone.A、renderB、

ThereasonBeethovenwentawaytothecountryis______.A、thathewasgradually

Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[br]

Whatisthepossibi9reasonforthecandidatesfailtogetjobsattheBBC?[ori

Yourreasonsfordemandinganincreaseinwagesare______.A、inaccurateB、inadeq

ThereasonwhyIleftbeforethemeetingendedwas________________Iwasbored

Whichofthefollowingismentionedasareasonforthelowpopulationgrowthra

Whichofthefollowingismentionedasareasonforthelowpopulationgrowthra

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat[br][

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat[origin

Whatisgiventothelistener?[originaltext]O.K.Here’syourkey.Theelevator

NarratorListentopartofaconversationbetweentwostudents.Now

NewZealandisalarge,longgroupofislandsinthe______PacificOcean.A、Sout

某桥实测一阶竖向自由振动信号如下图所示（横坐标X为时间，单位为秒；竖坐标Y为加速

患者月经提前，量时多时少，经色紫红，质稠，经行夹有血块；伴少腹胀痛，乳房胀痛，心

下列哪一项不是黄疸热重于湿证的特点A.身目黄色鲜明 B.头重身困 C.腹部胀

商业银行的最基本职能是（ ）。A、充当信用中介 B、变货币收入为货币资本

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