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
外语
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
2010-05-25
60
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.
【C17】
选项
A、about
B、as
C、for
D、to
答案
C
解析
题型:语法题(介词的使用)。for在此处强调目的。
转载请注明原文地址:https://kaotiyun.com/show/f42K777K
0
专业英语四级
相关试题推荐
WhatisexpectedtoriseintheU.S.from2003to2010?
WhichofthefollowingstatementsisTRUE?
It’sanawful______yourwifecouldn’tcome.Iwaslookingforwardtomeeting
WriteonANSWERSHEETTWOanoteofabout50-60wordsbasedonthefollowingsituation:YouareDavid/Rachel.Youhavejusth
Heaskedmetolendhimsomemoney,whichIagreedtodo,_______thathepaidmebackthefollowingweek.
Nowadaysgroupsofscientificworkers,often【C1】______bytheirgovernments,spendtheirtime【C2】______theoccurrenceofearthq
Peopletakephotographsfora【C1】______ofreasonsbutthemost【C2】______istomakearecordofsomethinginordertoshowot
Ironandsteelexpandswhenheatedand______whencooled.
Thesocietyisunstable,fullofcriminalcases,soyoucan’tbe______careful.
Oneofthemostcriticalproblems【C1】_____blackandotherminorityAmericanstodayisthedifficultyofentering【C2】_____socie
随机试题
留取大便标本查阿米巴原虫,容器应选择
能形成真菌菌丝的是
企业法人不能清偿到期债务,并且资产不足以清偿全部债务或者明显缺乏清偿能力的,根据《企业破产法》的规定,该企业法人可以选择以下哪些程序处理其与债权人之间的债权债务关系?
海事管理机构在核发()时,应向当事船舶配发《船舶最低安全配员证书》。
上网公开发行方式是指利用证券交易所的交易系统,主承销商在证券交易所开设股票发行专户并作为惟一的卖方,投资者在指定时间内,按现行委托买入股票的方式进行申购的发行方式。( )
金融产品的特征是( )。
简述南京国民政府诉讼审判制度的特点。
TakeaminutetofamiliarizeyourselfwiththeAtlanticMeridionalOverturningCirculation(AMOC).【F1】It’samassiveoceancurr
Thereexistsasocialandculturaldisconnectionbetweenjournalistsandtheirreaders,whichhelpsexplainwhythe""standard
A、Fatheranddaughter,B、Uncleandniece.C、Auntandnephew.D、Cousins.D综合推断题。女士要找玛丽姑姑,男士回答说他妈妈不在,由此推断,两人应该是表亲,所以D正确。
最新回复
(
0
)