暗适应（dark adaptation）
题目
暗适应（dark adaptation）
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参考答案和解析
正确答案:当人从亮处突然进入暗室，最初几乎看不清任何物体，经过一定时间后，逐渐恢复了在暗处的视力，这种现象叫暗适应。
更多“暗适应（dark adaptation）”相关问题
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第1题：
共用题干
Dark Forces Dominate Universe
The 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 Paul
Steinhardt 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答案：B解析： -
第2题：
ETCA分别代表（）
- A、experience
- B、test
- C、concept
- D、adaptation
正确答案:A,B,C,D -
第3题：
暗反应(dark reactions)
正确答案:利用光反应生成的ATP和NADPH的化学能使CO2还原成糖或其它有机物的一系列酶促过程。 -
第4题：
以下哪项是EGPRS的关键技术？（）
- A、Incremental Redundancy
- B、Packet Control Unit
- C、Dynamic Abis Pool
- D、Link Adaptation
正确答案:A,C,D -
第5题：
名词解释题暗适应（dark adaptation）正确答案： 当人从亮处突然进入暗室，最初几乎看不清任何物体，经过一定时间后，逐渐恢复了在暗处的视力，这种现象叫暗适应。解析： 暂无解析 -
第6题：
填空题According to the passage, to slow the process of adaptation is the solution to “hedonic treadmill”.____正确答案： F解析：
由题干中关键词“hedonic treadmill”定位至F段。本段提出“享乐适应症（hedonic treadmill）”这一现象时，说我们能够减缓这个适应过程，故匹配段落为F段。 -
第7题：
填空题We can see the importance of adaptation when bad times strike.____正确答案： H解析：
由题干中“the importance of adaptation”定位至H段。本段讲到当好事接二连三出现时，适应调整可能是我们所不情愿的；但当厄运降临（when bad times strike），适应调整却能把我们从痛苦中解救出来，故匹配段落为H段。 -
第8题：
名词解释题明适应（light adaptation）正确答案： 人从暗处来到强光下，最初感到强光耀眼，不能视物，只有稍待片刻，才能恢复视觉，这种现象叫明适应。解析： 暂无解析 -
第9题：
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/>
正确答案： D解析： 暂无解析 -
第10题：
单选题Hardly did he hear his mother's calling when he realized that it was already dark.Adid he hear
Bcalling
Cwhen
Dit was already dark
正确答案： B解析： -
第11题：
名词解释题全身适应综合征衰竭期（The exhaustion stage of general adaptation syndrome）正确答案： 持续强烈的有害刺激耗竭机体抵抗能力，肾上腺皮质激素持续升高，但糖皮质激素受体的数量和亲和力下降，机体内环境明显失衡，应激相关疾病及器官功能衰竭出现解析： 暂无解析 -
第12题：
单选题They had the appearance of dark-skinned and dark-haired humans, _____ of course they were much smaller than ordinary people.Ahowever
Balthough
Cwhile
Dnevertheless
正确答案： D解析：
句意：他们有人类的外表—黝黑的皮肤，黑亮的头发，尽管比普通人小得多。although引导让步状语从句。 -
第13题：
__________A.popular
B.large
C.remarkable
D.dark答案：A解析： -
第14题：
适应（adaptation）
正确答案:①细胞、组织或器官；②耐受刺激作用；③存活的过程；④形态：萎缩、肥大、增生、化生。 -
第15题：
明适应（light adaptation）
正确答案:人从暗处来到强光下，最初感到强光耀眼，不能视物，只有稍待片刻，才能恢复视觉，这种现象叫明适应。 -
第16题：
请解释适应（adaptation）、适合度（fitness）的含义并说明适合度的两个重要内涵是什么?
正确答案: 种群中存活和生殖最有效的个体（即具有最高适合度的）将比适合度低的个体，贡献更多的后裔给以后的世代。说得通俗点就是某一基因型相对于其他的基因型相比，能够存活并留下后代的相对能力。 -
第17题：
单选题They had the appearance of dark-skinned and dark-haired humans, _______ of course they were much smaller than ordinary people.Ahowever
Balthough
Cwhile
Dnevertheless
正确答案： A解析：
他们有人类的外表—黝黑的皮肤，黑亮的头发，尽管比普通人小得多。although引导让步状语从句。 -
第18题：
单选题I don't feel like going out now: I'm not used to have a walk after dark.Adon't
Bgoing out
Cto have a walk
Dafter dark
正确答案： B解析： -
第19题：
名词解释题全身适应综合征的抵抗期（The resistance stage of general adaptation syndrome）正确答案： 应激原持续作用于机体，在警告反应后，表现出以肾上腺皮质激素分泌增多为主的适应性反应，称抵抗期解析： 暂无解析 -
第20题：
名词解释题适应（adaptation）正确答案： 细胞和由其构成的组织、器官能耐受内、外环境中各种有害因子的刺激作用而得以存活的过程，称为适应。适应在形态上表现为萎缩、肥大、增生、化生。解析： 暂无解析 -
第21题：
问答题何谓 Dark field?正确答案： 接收散射光讯号的缺陷扫描机解析： 暂无解析 -
第22题：
单选题_____ he realized it was too late to return home.ANo sooner it grew dark when
BIt was not until dark that
CScarcely it grew dark than
DWhile it grew dark that
正确答案： D解析： -
第23题：
单选题5～8分钟时暗适应曲线上的转折点代表了（）A视锥细胞暗适应过程的开始
B视锥细胞暗适应过程的终止
C视杆细胞暗适应过程的开始
D视杆细胞暗适应过程的终止
E视锥细胞光敏色素的更换
正确答案： E解析： 暂无解析