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
2019-06-10
30
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/LKnZ777K
0
考研英语一
相关试题推荐
Dopeoplegethappierormorefoul-temperedastheyage?Stereotypesofirritableneighbors【C1】______,scientistshavebeentryi
Dopeoplegethappierormorefoul-temperedastheyage?Stereotypesofirritableneighbors【C1】______,scientistshavebeentryi
Dopeoplegethappierormorefoul-temperedastheyage?Stereotypesofirritableneighbors【C1】______,scientistshavebeentryi
Aperson’shomeisareflectionofhispersonality.Dependingonpersonality,mosthaveinminda(n)"【C1】______home".Butingen
Aperson’shomeisareflectionofhispersonality.Dependingonpersonality,mosthaveinminda(n)"【C1】______home".Butingen
RunningfortheofficeofthePresidentoftheUnitedStatesisexceptionallyarduousandshouldnotbeundertakenbythe【C1】___
OnSeptember28thTimCook,Apple’schiefexecutive,publishedanopenletterapologisingtocustomersfortheshortcomingsoft
Oneofourexpectationsabouteducationisthatitwillpayoffintermsofupwardmobility.Historically,thecorrelationbetw
随机试题
积滞乳食内积证的治疗首选方是
采购按照支付对价的方式划分,其分类不包括()。
甲欲向乙购买一批货物,双方在买卖中约定,甲于次日交付定金5万元,乙于一个月内发货。次日,甲向乙交纳了1万元,乙接受,但一个月后一直不发货,造成甲严重损失,甲欲适用定金罚则要求乙赔偿,那么甲可以()。
从会计核算的角度,费用按经济用途分为()。
A公司签发一张商业汇票给收款人B,汇票上未注明付款日期,则该票据无效。()
合伙人甲在某普通合伙企业中有财产份额10万元,待分配利润5万元。现甲无力偿还其对合伙企业外乙的负债12万元,乙要求强制执行甲在合伙企业中的财产。对此,下列说法正确的是()。
儿童记忆容量的增加,主要在于()。
新闻媒介是沟通社会与政府的重要桥梁,在政务信息传输系统中具有_________的作用。但体制转型的压力,加之巨大利益的诱惑及制度缺失,给记者的职业操守带来巨大_________,各种虚假报道不时见诸报端,成为小道消息的渊薮。因此我们必须不断完善新闻从业人员
简述现代教师应具备的基本素养。
WhichLowCarbonTechnologyIsNowaReality?A)Withfossilfuelsexpectedtosupplyover70%oftheworld’senergyneedsby204
最新回复
(
0
)