名词解释题暗适应（dark adaptation）
名词解释题
暗适应（dark adaptation）
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相关考题：
My little brother used to be afraid of the dark．（改为反意疑问句）My little brother used to be afraid of the dark，_____ _____?
Which one of the following elements of culture tends to resist change and adaptation?() A.DressingB.LanguageC.ValuesD.Habits
Blood flowing from a cut artery appears ______.A.dark red with a steady flowB.bright red with a steady flowC.bright red and in spurtsD.dark red and in spurts
共用题干Dark Forces Dominate UniverseThe earth,moon,sun and all visible stars in the sky make up less than one percent of the universe.Almost all the rest is dark matter and dark energy,unknown forces that _______(1)astronomers.Observations in recent years have changed the basic_______(2)of how the universe evolved and have indicated how little is known about the major forces and substances that_______(3)our world.Astronomers now know that luminous（发光的）matter一stars , planets and hot gas一 accounts_______(4)only about 0.4 percent of the universe.Non-luminous components , such as black holes and intergalactic（星系间的）gas,_______(5) up 3.6 percent.The rest is either dark matter,about 23 percent,or dark energy,about 73 percent.Dark matter,sometimes_______(6)"cold dark matter,"has been known for some time.Only recently have researchers come to understand the key role it_______ (7)in the formation of stars,planets and even people."We_______(8)our very existence to dark matter,"said physicist PaulSteinhardt and a co-author of a review on dark matter which_______(9)not long ago in the journal Science."Dark matter dominated the structure_______(10)in the early universe," Steinhardt said."For the first few billion years dark matter contained most of the mass of the universe. You can think of ordinary matter_______(11)a froth（泡沫）of an ocean of dark matter. The dark matter clumps（结成块）and the ordinary matter falls into it. That_______(12) to the formation of the stars and galaxies（星系）."Without dark matter,"there would be virtually no structures in the universe,"The nature of dark matter is_______(13).It cannot be seen or detected directly. Astronomers know it is there because of its_______(14) on celestial（天体的）objects that can be seen and measured.But the most dominating force of all in the universe is called dark energy,a recently ________(15)power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed._________(11) A:with B:as C:from D:beside
以下哪项是EGPRS的关键技术？（）A、Incremental RedundancyB、Packet Control UnitC、Dynamic Abis PoolD、Link Adaptation
单选题They had the appearance of dark-skinned and dark-haired humans, _______ of course they were much smaller than ordinary people.AhoweverBalthough Cwhile Dnevertheless
填空题According to the passage, to slow the process of adaptation is the solution to “hedonic treadmill”.____
单选题I don't feel like going out now: I'm not used to have a walk after dark.Adon'tBgoing outCto have a walkDafter dark
单选题You work as a Web Developer at Certkiller.com. You are in the process of creating a Webapplication using Microsoft ASP.NET 3.5. You create a folder named Dark in the App_Themes folder of the Web application. You also addfour skin files to this folder. You have to make sure that the controls on a page have their appearances overridden by the control definitions defined in the skin files. What should you do？ Which Page directive should you use？（）AYou should use the page directive: %@ Page StyleSheetTheme=App_Themes.Dark/BYou should use the page directive: %@ Page Theme=App_Themes.Dark/CYou should use the page directive: %@ Page Theme=Dark/DYou should use the page directive: %@ Page StyleSheetTheme=Dark/
单选题Hardly did he hear his mother's calling when he realized that it was already dark.Adid he hearBcallingCwhenDit was already dark
单选题_____ he realized it was too late to return home.ANo sooner it grew dark whenBIt was not until dark thatCScarcely it grew dark thanDWhile it grew dark that
单选题They had the appearance of dark-skinned and dark-haired humans, _____ of course they were much smaller than ordinary people.AhoweverBalthoughCwhileDnevertheless