首页
登录
职称英语
The difference between a liquid and a gas is obvious【C1】______the conditions
The difference between a liquid and a gas is obvious【C1】______the conditions
游客
2024-02-24
39
管理
问题
The difference between a liquid and a gas is obvious【C1】______the conditions of temperature and pressure commonly found【C2】______of the Earth. A liquid can be kept in an open container and【C3】______it to the level of a free surface. A gas forms no free surface but【C4】______to diffuse throughout the space available; it must【C5】______be kept in a closed container, as【C6】______a planet’s atmosphere. The distinction was a【C7】______feature of early theories【C8】______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【C9】______different kinds of molecules(分子). The theories now prevailing【C10】______a quite different approach by emphasizing.【C11】______liquids and gases have in common. They are both forms of matter that have no permanent structure, and they both【C12】______easily. They are fluids.
The【C13】______similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.【C14】______a closed container partially filled with a liquid is heated. The liquid expands, or【C15】______, becomes less dense; some of it evaporates.【C16】______, the vapor above the liquid surface becomes denser as the evaporated molecules are【C17】______it. The combination of temperature and pressure【C18】______the densities become equal is【C19】______the critical point. Above the critical point the liquid and the gas can no longer be【C20】______; there is a single, undifferentiated fluid phase of uniform density. [br] 【C2】
选项
A、on the surface
B、at the surface
C、on surface
D、at surface
答案
B
解析
考查介词短语的含义和用法。本题较具迷惑性的是选项A,但它表示的是“表面上”。只有选项B可接介词 of,组成at the surface of…的结构,表示“在……的表面”,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3479272.html
相关试题推荐
______(钢虽坚硬)is,itwillbendorbreakundercertainconditions.Hardassteel
[originaltext]TherearebigculturaldifferencesbetweenBritishshoppersa
[originaltext]TherearebigculturaldifferencesbetweenBritishshoppersa
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
随机试题
ChooseTWOletters,A-E.Whichpiecesofadvicedoesthespeakergiveabouteati
Ascientificdiscoveryisoftenmade【C1】______beforesomeoneisabletopu
[originaltext]W:So,you’11begettingdresseduplater—beforeyougototheB
技能的活动方式是( )A.合乎法则的 B.不随意运动的 C.遗传获得的
关于慢性肾盂肾炎的临床表现,下列哪项是不正确的A.尿路刺激症状可不典型 B.可
共用题干 小王今年17岁,父母离异,现父母均已再婚,小王一直由奶奶扶养长大。初
为门诊癌症疼痛患者开具的第一类精神药品注射剂,每张处方不得超过A.一次常用量
在货币需求理论中,反映货币量决定物价水平的是()理论观点。A.剑桥学派的衔接余
改革开放以来,可行性研究在投资决策中发挥了重要作用。但也存在不少问题,归结起来,
某矿建施工单位承建了一立井井筒施工任务,该井筒净直径4.5m,深度860m,为固
最新回复
(
0
)