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 【C2】______found at the
The difference between a liquid and a gas is obvious 【C1】______the conditions of temperature and pressure 【C2】______found at the
admin
2012-03-21
37
问题
The difference between a liquid and a gas is obvious 【C1】______the conditions of temperature and pressure 【C2】______found at the surface 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 prominent feature of early theories 【C7】______the phases of matter. In the nineteenth century, for example, one theory 【C8】______that a liquid could be "dissolved" in a vapor without losing its 【C9】______, and another theory held that the two phases are 【C10】______different kinds of molecules (分子). The theories now prevailing 【C11】______a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter that have no 【C12】______structure, and they both flow 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 【C17】______the evaporated molecules are added to 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.
【C8】
选项
A、maintained
B、confirmed
C、approved
D、implied
答案
A
解析
词义。maintain是“主张、维持”之意,confirm是“确定、确认”的意思,approve是“批准、通过”的意思,imply是“暗示、意味”之意。根据文意,这里应该选maintain。
转载请注明原文地址:https://jikaoti.com/ti/5egMFFFM
0
专业英语四级
相关试题推荐
The______betweenGreeceandTroylastedtenyears,bringingseriousdisasterstothepeopleoftwonations.
TheChinesespaceprogramaimsat______.
WhichoneofthefollowingwasNOTamongtheconditionsofthemanseveralyearsago?
Myparentsused_______inSouthAmericaandIwasusedtothelongdistanceflightsbetweenChinaandSouthAmericaduringthe
WeightLossSolutionsCenterMorethan61percentofAmericansareoverweightorobese,accordingtotheNationalCenterf
Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoact
Migrationisusuallydefinedas"permanentofsempermanentchangeofresidence."Thisbroaddefinition,ofcourse,wouldinclude
What’sthechangeinAmericanfamilyinthe21century?
Recentlymanyschoolshavefacedwhatcouldhecalledthe-crisisofcomprehensionor,insimpleterms,thephenomenonofstuden
Thatexperiencesinfluencesubsequentbehaviorisevidenceofanobviousbutneverthelessremarkableactivitycalledremembering
随机试题
下列说法正确的是()
在Windows7的窗口中,标题栏的右侧有“最大化”、“最小化”、“还原”和“关闭”按钮,其中不可能同时出现的两个按钮是________________。
辛亥革命开创了比较完全意义上的资产阶级民主革命。
女,27岁。近4个月来全口牙龈逐渐肿大,刷牙时牙龈易出血,偶有牙龈自动出血史。若患者妊娠6个月,诊断为妊娠期龈炎,临床上最可能表现为
下列各项中,应计入当期产品成本的有()。
某次全市司法工作者会议进行分组讨论。其中有一个小组共8人。会议开始时小组长问大家原来各自是否认识。结果是全组中仅有一人认识小组中的3个,有3人认识小组中的2人,有4人认识小组中的1人。如以上统计属实,则最能得出以下哪项结论?()
钙:钠
Soft-drinksaleshavebeendecliningforninestraightyears.Thisismuchmorethanatrend—it’safundamentalshiftinconsum
某二叉树中有n个度为2的结点,则该二叉树中的叶子结点数为
下面描述中错误的是()。
最新回复
(
0
)