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【B1】______ the conditions of temperature and pressure commonly found at
The difference between a liquid and a gas is obvious【B1】______ the conditions of temperature and pressure commonly found at
admin
2009-06-10
85
问题
The difference between a liquid and a gas is obvious【B1】______ the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and 【B2】______ it to the level of a free surface. A gas forms no free surface but 【B3】______ to diffuse throughout the space available; it must【B4】______ be kept in a closed container, as【B5】______ a planet’s atmosphere. The distinction was a prominent feature of early theories 【B6】______ 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 【B7】______ different kinds of molecules (分子). The theories now prevailing 【B8】______ a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter that have no permanent structure, and they both flow easily. They are fluids.
The 【B9】______ similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.【B10】______ a closed container partially filled with a liquid is heated. The liquid expands, or 【B11】______ , becomes less dense; some of it evaporates.【B12】______ , the vapor above the liquid surface becomes denser as the evaporated molecules are added to it. The combination of temperature and pressure【B13】______ the densities become equal is 【B14】______ the critical point. Above the critical point the liquid and the gas can no longer be 【B15】______ ; there is a single, undifferentiated fluid phase of uniform density.
【B7】
选项
A、made up of
B、consisted of
C、constituted of
D、made from
答案
A
解析
词汇辨析能力。consist of 一般用主动式。be made from 一般指某种产品由某种材料制成(但从外表上看不出原材料)。be made up of 表示“由……组成”。
转载请注明原文地址:https://kaotiyun.com/show/bA6K777K
0
专业英语四级
相关试题推荐
Smokingbansinpublicplacesarebecomingmoreandmorecommoninmanycountries.Whethertherightsofthenon-smokerstobrea
MobilepaymenthastakenChinabystorm.Arecentsurveyfoundthat70percentofInternetusersdon’tregardcashasadailyne
HowtoCommunicateEffectivelyGeneralinformationoncommunication—It’saskillyoucanlearn.—Communicationsison
(1)TheParis-basedInternationalEnergyAgency(IEA),initsannualforecast,saidanumberoffactors,includingthesoaringcos
Whatifthegovernmentsimplypaideveryoneenoughsothatnoonewaspoor?That’sthesocalled"universalbasicincome"orUBI
OnPublicSpeakingI.People’sfrequentresponsetogivingtheirfirstspeech:feel【T1】________【T1】________II.Th
NoEnglishmanbelievesinworkingfrombooklearning.Hesuspectseverythingnew,anddislikesit,unlesshecanbecompelledb
HowtoConquerPublicSpeakingFearI.IntroductionA.Publicspeaking—acommonsourceofstressforeveryoneB.Th
BelowareagraphontuitionincreaseintheUSandanexcerptarguingagainstfreeuniversityeducation.Readthemcarefully
WhywerethereprotestsinBritainagainstIran?
随机试题
昆虫完成某一生长发育期需要的总热量是一个常数,这一常数称为__________。
男性,60岁,半年来吞咽困难,逐渐加重,近1个月来只能进半流质,锁骨上淋巴结未及肿大。[假设信息]若患者吞咽困难加重,近突然出现进食呛咳,体温38.5℃,左肺底可闻及水泡音,血白细胞数12×109/L,则高度怀疑
治疗风湿性疾病的药物,下列哪项是错误的
某国有企业采购生产工艺设备,因设备技术性能及要求难以描述,根据本项目特点招标代理机构应当建议优先采取()方式。
流体的内摩擦力T,单位面积上的内摩力τ,流体动力粘度系数μ和运动粘度v,它们之间的关系正确的是()。
“你有什么业余爱好?”是结构化面试中的()。
诱发运动性猝死的主要病症是()。
“没有哪一次巨大的历史灾难不是以历史进步为补偿的。”恩格斯这句话蕴含的哲理是()。
若f(x)的导函数是sinx,则f(x)有一个原函数为().
请删除单元格区域A1:D11的边框设置。
最新回复
(
0
)