首页
登录
职称英语
A. solid B. made up of C. equal D. fills E. describing F. vapor G. there
A. solid B. made up of C. equal D. fills E. describing F. vapor G. there
游客
2024-09-10
22
管理
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. [br] 【C4】
选项
答案
F
解析
空格前的a提示空格处应填入可数名词单数。此处主要讲的是“液体”和“气体”是物质的不同阶段,空格前已经提到“液体”,因此推断此处应填入表示“气体”的词,词库中的vapor“蒸汽”符合要求。原文并未提到“固体”,因此排除solid“固体”。
转载请注明原文地址:https://tihaiku.com/zcyy/3752125.html
相关试题推荐
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
A.solidB.madeupofC.equalD.fillsE.describingF.vaporG.there
随机试题
Whenmostpeoplethinkaboutchangingtheirbodyshape,theyusuallyfocuson
空调机房的高度一般在( )。A.3~4m B.4~5m C.4~6m D
B
对于严寒地区,常见的保温构造方法是在距离外墙周边()m的范围内设置保温层。
患儿,男性,7岁,近一年来,经常从睡眠中惊醒,伴随极度的恐惧和焦虑,无尖叫及哭吵
与现券交易相比,远期交易的特点主要表现在以下()方面。 ①远期交易买卖双
初步鉴别肠杆菌种致病菌及非致病菌的试验是A.葡萄糖发酵试验B.吲哚试验C.甲基红
某单位去年党员人数比入党积极分子人数多4倍,男性党员和入党积极分子均比女性多。今
烤瓷熔附金属全冠边缘为烤瓷者,牙体颈缘应预备成A.羽状 B.凹槽状 C.直角
下列不属于H.S编码设立品目依据的是()。 A.产品的用途B.产品的基本
最新回复
(
0
)