首页
登录
职称英语
One reason human beings can thrive in all kinds of climates is that they c
One reason human beings can thrive in all kinds of climates is that they c
游客
2024-10-22
28
管理
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. [br] 【C14】
选项
A、ensures
B、ensure
C、ensuring
D、to ensure
答案
D
解析
题型:语法题(动词不定式的承前省略)。在本句中,to control和to ensure作并列目的状语。
转载请注明原文地址:https://tihaiku.com/zcyy/3811705.html
相关试题推荐
Likeotherformsoflifeonthisplanet,humanbeingsfaceabasictask:to
Likeotherformsoflifeonthisplanet,humanbeingsfaceabasictask:to
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
Onereasonhumanbeingscanthriveinallkindsofclimatesisthattheyc
随机试题
Theoutcryagainstthegovernment’spolicieswillsubsideonlyifacompromisei
YoumightthinkthathamburgerswereinventedintheUnitedStates,butthat
【B1】[br]【B10】A、honourB、expectationC、abilityD、confidenceA根据选项前的不定冠词an,可以排除[
三十三岁已婚妇女,平时月经周期规则,经期正常,经量中等。末次月经于半月前。今晨排
某办公楼实行工程量清单计价,本项目招标最高限价的编制日期为2019年9月,编制当
下列不属于医患认识互动的是:A.医患认知互动 B.医患情感互动 C.医患意志
幼儿教育的领导权和性质取决于( )。A.国家地理 B.国家人口 C.国家制
酸性汗味最常见于A.风湿热或长期服用解热镇痛药物的患者 B.多汗者 C.腋臭
(二)某县汽车客运站经营往返省城的客运班线,2015年5月运营资料统计如下表。
(2009年真题)某咨询机构受政府委托,研究制定某地区经济社会发展规划。在参考了
最新回复
(
0
)