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
A. solid B. made up of C. equal D. fills E. describing F. vapor G. therefore H. fundamental I. elementary J. distinguished
A. solid B. made up of C. equal D. fills E. describing F. vapor G. therefore H. fundamental I. elementary J. distinguished
admin
2017-05-19
28
问题
A. solid B. made up of C. equal D. fills E. describing
F. vapor G. therefore H. fundamental I. elementary J. distinguished
K. flow L. refuting M. consisted of N. however O. dense
The difference between a liquid and a gas is obvious under the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and 【C1】______ 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 case of a planet’s atmosphere. The distinction was a prominent feature of early theories【C3】______ the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be "dissolved" in a【C4】______ without losing its identity, and another theory held that the two phases are【C5】______ different kinds of molecules. The theories now prevailing take 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【C6】______ easily. They are fluids.
The【C7】______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 words, becomes less【C8】______; some of it evaporates. In contrast, the vapor above the liquid surface becomes denser as the evaporated molecules are added to it. The combination of temperature and pressure at which the densities become【C9】______ is called the critical point. Above the critical point the liquid and the gas can no longer be【C10】______ ; there is a single, undifferentiated fluid phase of uniform density.
【C9】
选项
答案
C
解析
空格前的become提示空格处填入形容词作表语。最后一句提到,高于临界点,只存在一种同样密度的、没有区别的流体,因此推断在临界点时,密度也是相等的。词库中的equal“相等的”符合要求。
转载请注明原文地址:https://kaotiyun.com/show/xHDK777K
0
专业英语四级
相关试题推荐
Theoriginsofthehomecatisgenerallythoughttodatebackto
WhatisTRUEaboutGeneralMladic?
Whoapprovedtheproposaltolegalizegaymarriage?
Whereisthenewsmostlikelytobereported?
Itisurgentthatimmediatemeasures______tostopthesituation.
HowtoBuildYourVocabularyEffectivelyVocabularyisthefoundationoflearningalanguage.Withoutit,noneoftheskill
TypeDpersonality,firstdefinedinthe’90s,ischaracterizedbyfeelingsofnegativity,depression,anxiety,stress,anger,a
A、Peoplethinkwomenshouldbenurturing.B、Peoplethinkfewpositivewomenrolesareavailable.C、Peoplethinkwomendon’tknow
Odd______itsounds,cosmicinflationisascientificallyplausibleconsequenceofsomerespectedideasinelementaryparticlep
CheerleadingCheerleadersarepartofathleticcompetitionsthroughouttheUnitedStates./Theyleadthecrowdincheering
随机试题
并非所有的教授都没有博士学位,因此,有些具有博士学位的人享有很高的学术声望。为使上述推理成立,必须补充以下哪项作为前提?
胆碱的生理功能不包括
A.2年B.3年C.5年D.7年E.10年药品批准文号有效期()
某省重点工程项目,由于工程复杂,技术难度高,一般施工队伍难以胜任,建设单位自行决定采取邀请招标方式。共有A、B、C、D、E、F、G、H8家施工单位通过了资格预审,并于规定的时间9月10~16日购买了招标文件。招标文件中规定,10月18日下午4时是投标截止时
图4—39所示机构中,杆O1A=02B,O1A//O2B,杆O2C=O3D,O2C//O3D,且O1A=20cm,O2C=40cm,CM=MD=30cm,若杆O1A以角速度ω=3rad/s匀速转动,则M点速度的大小和B点加速度的大小分别为()。
整个设备工程项目信息的分发和检索一般都是采用(),使用计算机软件来保证信息能及时、准确地送达信息需求部门。
丙找甲借自行车,甲的自行车与乙的很相像,均放于楼下车棚。丙错认乙车为甲车,遂把乙车骑走。甲告知丙骑错车,丙未理睬。某日,丙骑车购物,将车放在商店楼下,因墙体倒塌将车砸坏。下列表述正确的是
Whenmengrowolder,theirhairoftenbeginstofallout.Whenhairbeginstofallout【C1】______oldage,itisimpossibletomak
Themostconsistentlyidentifiedteachereffectivenessvariableistimeontask.Thatis,themoretimethatstudentsspendon
Inthe1980s,homeschoolingmadeacomebackintheU.S.whenreligiouslyconservativeparentsconvincedstatestoapproveandgi
最新回复
(
0
)