考试资讯
题库下载
在线刷题
视频课程
注册
登录
|
微信刷题
公共英语三级题库
/阅读理解 Section C
Heat loss by sweating depends on the fact that when a liquid evaporates, it absorbs an enormous quantity of heat from its surroundings. Therefore, when I am of sweat evaporate, a great deal of heat is absorbed from the surface of the body in contact with it. 1______
2______ The first is the amount of movement of air surrounding the body. The second is the amount of water vapor in the air that surrounds the body.
3______ For this reason, sweat evaporates very rapidly on windy days, and the rate of heat loss by sweating is much more than on a still day. This accounts for the fact that hot still days are much less comfortable than hot windy days. In contrast, the sweat evaporates very rapidly on hot windy days, and cools the body quickly and effectively.
4______ When air is carrying the maximum amount of water vapor that it can hold, it is said to be 100% saturated with water vapor. The relative humidity of the air is said to be 100%. Under these conditions the air cannot carry any water, so no water can evaporate. When the relative humidity is high, therefore, sweat cannot evaporate. Instead, it forms large drops and runs off your skin without cooling you.
5______ It is obvious that under these conditions, evaporation will be much more rapid. Therefore, sweating will be much more effective as a method of losing heat from the body. On a hot dry day, sweat evaporates as soon as it is formed, and you feel reasonably cool even though the temperature of your environment is very high.
[A] When the air is very dry and carries no water at all, the relative humidity is said to be 0%.
[B] The second factor is the amount of water vapor in the air-the humidity.
[C] Hot windy days are much more comfortable than hot still days.
[D] This heat transfer occurs even if the environment is hotter than the body.
[E] When air moves over the surface of water, the amount of evaporation is greatly increased.
[F] You might expect the highest incidence of a heat stroke when the maximum temperature is 100 and humidity is 50%.
[G] Two factors affect the rate of evaporation of sweat, and therefore the effectiveness of sweating as a method of cooling the body.
1.[选词填空]_________
2.[选词填空]________
3.[选词填空]_________
4.[选词填空]_________
5.[选词填空]________
参考答案:
A,B,D,D,E
解题思路:
>>>立即刷题
相关动态
公共英语三级:图表作文的内容结构
2018年3月公共英语三级:网报缴费完成后发现个人信息错误怎么办?
2018年3月公共英语三级报名无法登陆网站怎么办?
2018年公共英语三级写作训练(含范文) 1
公共英语三级情景类写作
2018年公共英语三级 阅读理解训练(含解析)1
热点动态
2020年全国职称计算机考试和职称英语考試取消了吗?到底还考不考?
2020年全国计算机一级考试题型及分值
二级Ms Office全国通过率22%,真的很难吗?
【历年真题】2020年8月《12656毛泽东思想和中国特色社会主义理论体系》自考试卷(含答案)
2021年【历年真题】4月《12656毛泽东思想和中国特色社会主义理论体系》自考试卷(含答案)
【历年真题】2020年10月《12656毛泽东思想和中国特色社会主义理论体系》自考试卷(含答案)
QQ客服:蓝老师
QQ客服:侯老师
QQ客服:袁老师