首页
登录
职称英语
The difference between a liquid and a gas is obvious【66】the conditions of te
The difference between a liquid and a gas is obvious【66】the conditions of te
游客
2023-10-13
74
管理
问题
The difference between a liquid and a gas is obvious【66】the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and f【67】it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the space available ; it must【68】be kept in a closed container, as in the【69】of a planet’s atmosphere. The distinction was a prominent feature of early theories【70】(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 t【71】a quite different approach by emphasizing【72】liquids and gases have in common. They are both forms of matter【73】have no permanent structure, and they both flow easily. They are fluids.
The f【74】similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat. S【75】a closed container partially filled with a liquid is heated. The liquid expands, or in other【76】, becomes less dense; some of it evaporates. In contrast, the vapor above the liquid surface becomes dense as the evaporated molecules are added【77】it. The combination of temperature and pressure【78】which the densities become equal is c【79】the critical point. Above the critical point the liquid and the gas can no longer be dis【80】; there is a single, undifferentiated fluid phase of uniform density. [br]
选项
答案
distinguished
解析
句意:在临界点之上时,气体和液体就很难再区分开来。
转载请注明原文地址:https://tihaiku.com/zcyy/3095465.html
相关试题推荐
Thepolicemanlookedme______severaltimesandobviouslydislikedwhathesaw.A、
Ontheleftaretwoshapeswithanarrowbetweenthem.Decidedhowthesecondis
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strik
Acollisionbetweenanaircraftandoneormorebirdsistermedabird-strik
In1908,thefirstinternationalrugbymatchwas________inParisbetweenFrance
Youshouldtrytomakesome________ofyourdifferencessothatyoucanworktoge
Pronunciationisoneofthemostobviousareas.Forexample,inOldEnglish,pe
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
Thereisabigdifferencebetweentownlifeand【D1】__________inEngland.
随机试题
[originaltext]LadiesandGentlemen,Nowwehavecometothemostexcitinga
关于交工验收阶段安全监理中路面修复作业的说法,错误的有( )。A.作业人员必须穿
目前我国常用的大跨度建筑屋盖结构,是以下哪几种?Ⅰ.薄壳结构Ⅱ.网架结构
软件质量因素不包括( )。A.正确性 B.高性能 C.可测试性 D.可理
中药实用新型专利权保护期限是()。A.5年B.10年C.15年D.20年E.2
水准测量时,关于尺垫使用的说法正确的是()。A、在水准点上需放尺垫,尺应立在尺垫
甲房地产开发公司(以下简称甲公司)实施旧城改造项目,按照规划拟建20000m2商
证券公司内部负责证券分析师跨越隔离墙行为的审批和监控的是()管理部门。A:人力资
根据《上市公司证券发行管理办法》第六条的规定,发行可转换公司债券的上市公司应当组
逍遥丸与加味逍遥丸是治疗月经不调的常用成药,二者除均能疏肝外,又均能()。
最新回复
(
0
)