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
专升本
When the temperature of a liquid is raised enough, the liquid boils. This means that bubbles of vapor, containing millions of mo
When the temperature of a liquid is raised enough, the liquid boils. This means that bubbles of vapor, containing millions of mo
admin
2011-04-26
56
问题
When the temperature of a liquid is raised enough, the liquid boils.
This means that bubbles of vapor, containing millions of molecules, form below the surface.
In order for such bubbles to be produced, the pressure of the vapor inside them must be equal to the pressure of the air upon the surface of the liquid. If the air pressure is greater, the bubble will collapse. The boiling point of a liquid, then, is the temperature at which the vapor pressure of the liquid is equal to the atmospheric pressure upon the liquid at the surface.
The pressure of the atmosphere at sea level is about one kilogram per square centimeter. We call this pressure one atmosphere. The boiling point of a liquid, therefore, is the temperature at which its vapor pressure equals one atmosphere. The boiling point of water is 100 Celsius; of ethyl alcohol 78.5 Celsius; of mercury, 356.9 Celsius.
If the pressure on the surface of the water is reduced, the boiling point will be lower.
Now the higher up we go from sea level, the lower the atmospheric pressure becomes, since there is less air to press upon us.
Hence, while water boils at sea level at a temperature of 100 Celsius, its boiling point on a mountain three kilometers high is only 90 Celsius. Since the temperature of water does not rise as a result of boiling, it would take you longer to cook potatoes or carrots in boiling water on the mountain than it would at sea level.
Which statement of the following is false according to the passage?
选项
A、The boiling point of water on a mountain three kilometers high is only 90 Celsius.
B、It would take you longer to cook potatoes in boiling water on the mountain than it would at sea level.
C、When the temperature of a liquid is raised enough, the liquid boils.
D、The boiling point of water on a mountain six kilometers high is 95 Celsius.
答案
D
解析
本题为是非判断题。在第三段最后提到“…while water boils at sea level at a temperature of l00 Celsius,its boiling point on a mountain three kilometers high is only 90 Celsius.Since the temperature of water does not rise as a result of boiling,it would take you longer to cook potatoes or carrots in boiling water on the mountain than it would at sea level.(……水的沸点,在海平面处是100度,而在三千米高的山上只有90度。由于沸腾后水的温度不会上升,于是要烧熟土豆或胡萝卜,在山上比在海平面处需要更长的时间。)”可以判断A和B是正确的。在文章一开始提到“When the temperature of a liquid is raised enough,the liquid boils.(当液体温度升高到一定程度,该液体就沸腾了。)”可以判断C是正确的。用排除法,可以得出结论。另外,在第三段中提到“… while water boils at sea level at a temperature of 100 Celsius,its boiling point on a mountain three kilometers high is only 90 Celsius.(……水的沸点,在海平面处是100度,而在三千米高的山上只有90度。)”根据这个方法计算,海拔三千米的水的沸点是90度,那么,海拔六千米的水的沸点就应该是80度。
转载请注明原文地址:https://kaotiyun.com/show/L0qC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
StanleyWilliams,"Tookie",hasbeeninprisonfor20years.HeisonDeathRowformurder.HehelpedstarttheCripsganginLo
Atornadois______.ThepersonwhofoundAmy’sbabywas______.
Personalqualitiesarepersonal______ofanindividual.Thoughskillsareimportant,anemployerwillselectnewemployeesbas
Personalqualitiesarepersonalcharacteristicsofanindividual.Theyarewhatmakeupone’spersonality.Theyhelpapersonge
Manyanimalsareusedtohelpscientistsfindcuresfordiseases.Oneofthemostcommonanimalsusedismonkeys,orprimates.T
Iwouldliketotakethisopportunitytoexpressmysincere______ofyourhelp.
Dr.WilliamC.Stokoe,Jr.,wasthechairmanoftheEnglishDepartmentatGallaudetUniversity.Hesawthewaydeafpeoplecommu
Themodernageisanageofelectricity.Peoplearesousedtoelectriclights,radios,televisions,andtelephonesthatitish
Somediseasesare______bywildanimals.
Somepeopleseemtothinkthatsportsandgamesareunimportant.TheyliketowatchTVathome,gotothecinema,orsleep.【21】i
随机试题
A公司是一家房地产开发公司,其开发建设的商品房项目之一是“AAA”小区。自2013年9月开始,A公司在多种媒体上发布“AAA”小区的商品房预售广告。商品房的交付按施工进度分为两期,第一期为普通住宅,第二期为商业用房。该广告还详细描述了“AAA”小区内即将建
关于月经病的论治规律,以下观点不正确的是
A.六味地黄丸B.天王补心丹C.桑螵蛸散D.金锁固精丸E.大补阴丸
下列关于生态保护措施包括的基本内容说法正确的有()。
下列关于上市公司收购的说法中,错误的是()。
教师职业道德的基本范畴包括()。
根据以下资料,回答下列问题。2017年我国成年国民图书阅读率为59.1%,比上年增加0.3个百分点;报纸阅读率为37.6%,比上年降低2.1个百分点;期刊阅读率为25.3%,比上年增加1个百分点。2017年我国成年
ThemightyPacificwashestheshoresofthecontinents—NorthAmerica,SouthAmerica,Asia,Australia,andAntarctica.Itswaters
讨论方程axex+b=0(a>0)实根的情况.
FourStepsofLearningaForeignLanguageTheeffortsspentinhighschoollearningaforeignlanguagewerealmostfutile.Fortu
最新回复
(
0
)