首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
One reason human beings can thrive in all kinds of climates is that they can control the qualities of the air in the enclosed sp
One reason human beings can thrive in all kinds of climates is that they can control the qualities of the air in the enclosed sp
admin
2017-01-21
41
问题
One reason human beings can thrive in all kinds of climates is that they can control the qualities of the air in the enclosed spaces in which they live. Air conditioning is the use of mechanical systems to【C1】______that control in such places【C2】______homes, offices, theaters, institutions, factories, airplanes, and automobiles. The most familiar type of air conditioning is summertime cooling. Although important, this is【C3】______one of several aspects of air conditioning. Other applications【C4】______the control of the humidity (or air moisture), cleanliness, circulation of the air, and heating.
Tests have【C5】______that people generally feel best【C6】______certain temperature, humidity, and air velocity conditions. Temperatures can【C7】______from 21.5°C with 70 percent relative humidity to 28 °C with 30 percent relative humidity. Relative humidity is the【C8】______of moisture in the air【C9】______a specific temperature compared 【C10】______the amount it could hold at that temperature.【C11】______air velocities range from 4.5 to 10.5 meters per minute. It is also desirable that an air conditioner【C12】______dust, pollen, smoke, and odors from the air.
In many industrial environments, air conditioning is essential. Most print shops, for example,
【C13】______constant humidity in order to control paper shrinkage and【C14】______the【C15】______operation in some processes.
Libraries, especially ones with rare books, require air control to【C16】______the physical quality of their collections. Bakeries and the tobacco and cotton industries require high humidity【C17】______their products, and perishables such as fruits must be stored in cool, dry rooms. Some electronic components, drugs, and chemicals must be manufactured【C18】______the air is as free as possible【C19】______dust and other particles. Air conditioning is【C20】______in hospitals, especially in operating rooms.
【C6】
选项
A、at
B、around
C、within
D、under
答案
D
解析
考查固定搭配。under…conditions意为“在一定条件下”,故答案为D.under。
转载请注明原文地址:https://kaotiyun.com/show/7PEZ777K
0
考研英语一
相关试题推荐
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】______theboxystereosysteminthecor
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】______theboxystereosysteminthecor
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】______theboxystereosysteminthecor
Nooneworddemonstratedtheshiftincorporations’attentioninthemid-1990sfromprocessestopeoplemorevividlythanthesi
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
A1993studyshowingthatstudentswhodidreasoningtestswhilelisteningtothe1781SonataforTwoPianosinDbyMozarttend
A1993studyshowingthatstudentswhodidreasoningtestswhilelisteningtothe1781SonataforTwoPianosinDbyMozarttend
随机试题
简述委托合同终止的原因。
A.阿少夫细胞B.陷窝细胞C.类上皮细胞D.泡沫细胞E.噬神经细胞现象
肩关节正位摄影,以下错误的是
100级适用于10000级适用于
根据《循环经济促进法》,在技术可行、经济合理和有利于节约资源、保护环境的前提下,实施发展循环经济的优先原则是()。
在进行国际工程投标时,为保证投标后不中途退标,并在中标后与业主签订工程承包合同,投标者须递交()。
一项资产增加。可能引起()。
房地产开发企业将尚在建设中的商品房预先出售给商品房预购人,由商品房预购人支付购房定金或房价款的行为是指()。
下面是一位教师关于作文教学的看法魏书生曾说:“学生对批改作文的积极性很高,大部分学生对同学写的批语的关注程度远远超过关注教师的批语的程度。”为此,必须教给学生批改作文的方法。我认为魏书生的批改方法值得借鉴:一是基本部分,包括格式是否正确、卷面是否
TheArtofListeningI.Inthelastlecture,Communicationcompetence:1)personalmotivation2)communicationknowledge3)(1)__
最新回复
(
0
)