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
2023-07-23
41
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/2863008.html
相关试题推荐
______(钢虽坚硬)is,itwillbendorbreakundercertainconditions.Hardassteel
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcen
随机试题
Myco-teacherandImetintheparkinglotbeforeschoolandstaredintomy
信用保证保险承保的信用风险主要有()。A.财务信用风险 B.赊销信用风险
设A,B为两个随机事件,且P(A)=0.7,P(A-B)=0.3,则=_____
管道三通部位金属保护层的安装,支管与主管相交部位宜翻边固定,采用顺水()的连接方
A.最小有效量与最小中毒量之间的药物剂量 B.比最小有效量大些,比极量小些的药
灭头虱用物的处理方法,不妥的一组是A.治疗巾--烈日曝晒6h B.篦子上的棉花
C观察前面图形可发现,第一图顺时针旋转90度得到第二图;第二图顺时针旋转180度得到笫三图;第三图顺时针旋转270度得到第四图,故第四图应顺时针旋转360度
(2017年真题)根据《商业银行理财产品销售管理办法》,商业银行销售理财产品。应
租赁付款额,是指承租人向出租人支付的与在租赁期内使用租赁资产的权利相关的款项,其
金黄色葡萄球菌肺炎的主要临床特点是( )。A.肺部体征出现较早,易引起肺脓肿、
最新回复
(
0
)