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
The difference between a liquid and a gas is obvious【C1】______the conditions of temperature and pressure commonly found at the s
The difference between a liquid and a gas is obvious【C1】______the conditions of temperature and pressure commonly found at the s
admin
2016-11-30
33
问题
The difference between a liquid and a gas is obvious【C1】______the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fills it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the space available: it must【C2】______be kept in a closed container, as in the 【C3】______of a planet’s atmosphere. The distinction was a prominent feature of early theories 【C4】______(describe)the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be "dissolved" in a vapor without losing its identity, and another theory held that the two phases are made up of different kinds of molecules(分子). The theories now prevailing【C5】t______a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter【C6】______have no permanent structure, and they both flow easily. They are fluids.
The【C7】______(fundament)similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat. Suppose a closed container partially filled with a liquid is heated. The liquid expands, or in other【C8】______, becomes less dense: some of it evaporates. In contrast, the vapor above the liquid surface becomes dense as the evaporated molecules are added to it. The combination of temperature and pressure【C9】______ which the densities become equal is called the critical point. Above the critical point the liquid and the gas can no longer be【C10】______(distinguish): there is a single, undifferentiated fluid phase of uniform density.
【C2】
选项
答案
therefore
解析
这里表因果关系,所以用therefore。句意:气体容易扩散,所以必须保存在密闭的容器里。
转载请注明原文地址:https://kaotiyun.com/show/HfyK777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Childrenwhoarebroughtupinfamilieswhichdonothavemuchmoneyarebetterpreparedtodealwiththeproblemsofadultlife
Autumnistraditionallyatimeforfunandfestivitiesinmanycultures.InGermany,foralmosttwocenturiesthecitizensofBav
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.Inthecountry,everybodyknowseverybodyelse.Theyknow
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.Pilotssometimesrecordabirdstrikewhileatcruis
Themajorpartofmychildhoodwasspentinfightingoffterrorofthingswhichdidn’texist,andIdon’tthinkmyfathereveru
Ifthisuniversity______suchagoodreputation,Iwouldnothavecomehere.
Ifthisuniversity______suchagoodreputation,Iwouldnothavecomehere.
A、Businessowners.B、Officejobholders.C、Scottishmusicians.D、Farmingpeople.D
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【21】ChristopherColumbus.Hethoughthehadre
Idon’tseeany______ingoingonapicnicinsuchbadweather.
随机试题
A.0.2μg/mlB.0.4μ/gmlC.0.5~2μg/mlD.10~20μg/mlE.0.5~1.5μg/ml阿米替林的中毒血浓度为()
卡普,6岁,有绘画天才。她的画很受人们的喜爱,有的还获了奖。下列关于卡普对她的绘画作品所享有的权利中哪些说法是错误的?()
下列()属于重大事故。
下列不属于跟踪误差产生原因的是()。
根据《刑事诉讼法》的规定,下列有关侦查的表述中,正确的有()。
企业接受捐赠收入,应当按照赠与合同约定的履行捐赠义务的日期确认收入的实现。()
从1到1998的自然数中,有多少个数乘以72后是平方数?
2015年3月15日,第十二届全国人民代表大会第三次会议表达通过了修改《中华人民共和国法》的决定。这是该法自2000年实施以来的第一次大修。
白驹过隙:秒表
假设有选课表SC(学号,课程号,成绩),其中学号和课程号为C型字段,成绩为N型字段,查询学生有选修课程成绩小于60分的学号,正确的SQL语句是( )。
最新回复
(
0
)