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 commonly found【C2】_____
The difference between a liquid and a gas is obvious【C1】______the conditions of temperature and pressure commonly found【C2】_____
admin
2010-10-14
73
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.
【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://kaotiyun.com/show/4p87777K
0
大学英语四级
相关试题推荐
A、Stayhalfdays.B、Takealongertour:C、Tourthecountry.D、Restthewholeday.B题目问男士的建议是什么。女士说要在这个城市进行半日游。男士问为什么不游览一整天。可见B正确
Scientificresearchhasrevealedthatthroughouttheanimalworld,communicationisjustasimportantasitistohumanbeings.
A、Talkingaboutsports.B、Writinguplocalnews.C、Readingnewspapers.D、Puttingupadvertisements.C男士问女士是否能把有体育的那个版面递给他,女士表示同意
Afewmonthsago,millionsofpeopleinLondonheard【B1】______alloverthetown.Emergencyservices,theFireDepartments,theP
A、Thefederalgovernment.B、Individualschools.C、Therespectivestates.D、Localcommunities.D题目问谁负责学校的管理。从短文听到“Thestateautho
A、Sheusedtobeinpoorhealth.B、Shewaspopularamongboys.C、Shewassomewhatoverweight.D、Shedidn’tdowellathighschoo
A、Itwasawasteoftime.B、Itwasexciting.C、Itwasdisappointing.D、Itwasexpensive.C
A、ThemanwantstogotoTokyo.B、ThemanwantstogotoShanghai.C、Thereare4flightstoTokyofortherestoftheday.D、The
A、Hedidn’tgotoLosAngeles.B、HeenjoyedhimselfinChicago.C、Hespenthisholidayhere.D、Hedidn’tenjoyhistrip.B
Communicationstechnologiesarefarfromequalwhenitcomestoconveyingthetruth.Thefirststudytocomparehonestyacrossa
随机试题
最早的教学过程思想即学、思、行统一的观点,其提出者是()。
进入新单位后,领导没有给你明确工作目标,假如是你,该怎么办?
铣削交错齿三面刃铣刀螺旋齿槽时,应使螺旋槽靠向双角铣刀小角度锥面刃或单角铣刀端面刃。()
患者最可能的诊断为患者最易与下列哪种痴呆相混淆
案例2004年4月30日,乌海市××煤矿发生一起特大透水事故,造成13人死亡、2人失踪,直接经济损失287.5万元。该矿井田面积为0.144km2,煤种为肥焦煤,矿井主采煤层是16号煤层,可采储量为105.66×104t,煤层均匀厚度为8m
根据《中华人民共和国会计法》的规定,各单位采用的会计处理方法,前后各期应一致,一律不得改变。()
不是扬州画派的代表人物的是()。
转移阻抗是在经网络等效变换消去除短路点和电源节点后,所得网络中电源节点与短路点之间的连接阻抗。()
设A,B,C均是3阶方阵,满足AB=C,其中则必有()
A、Awideselectionofinvestments.B、Alimitedrangeofstocks.C、Agroupoflowriskbondsandcash.D、Avarietyoffunds.AWha
最新回复
(
0
)