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

游客2024-09-26 29

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

Whatdoastronomersusephotographicplatefor?A、Decreasingthetimeittakesto

Accordingtothepassage,whatdopeopleoftenthinkaboutastronomers?[origina

Whatmightbethepossiblereasonforusinganoldmethodtoconstructthebuildi

WhichofthefollowingisNOTthereasonforwildanimalsgettingendangered?A、C

Whatisthemainreasonthatpeoplethereliketheswallows?A、Theswallowsareh

WhichofthefollowingstatementsisCORRECT?A、Themanthinkshecanreasonwith

WhatisMr.Johnson’smainreasonforfindinganewjob?[originaltext]W:Hello,M

ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat[origin

Thereisnoconceivablereasonwhythereshouldbeanydifficultyduringthepro

Inaninventivemind,imaginationoftenservesasanecessary______toreason.A

Accordingtothepassage,hyperinflationischaracterizedby______.[br]Accord

[originaltext]M:Ican’treachTom.There’sabusysignal.W:Thenhangupand

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甲、乙机关听讲座时，在关闭手机问题上表现出的不同行为方式，说明()。 A.职业

下列行为中，不属于首席审计执行官的职责的是：A.向高级管理层和董事会报告内部审计

一个数的1.2倍减去4除312的商，差是54，这个数是（ ）A.100 B.

绦虫具有生长能力的是A.成节B.头节C.幼节D.孕节E.颈部

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