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

游客2024-09-26 60

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

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Inamomentofpersonalcrisis,howmuchhelpcanyouexpectfromaNewYork

D

表情肌的止点在() A.粘膜 B.皮肤 C.筋膜浅层 D.皮

下列关于心脏标志物应用原则的说法不正确的是A.临床检验中应同时检测cTn和CK-

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血清中出现单克隆免疫球蛋白（亦称M蛋白）的是A.急性粒细胞白血病 B.急性淋巴

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