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
2024-09-13
18
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/3756231.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
IamsorrythatIhavekeptyou(wait)______forsolong.waitingkeepsb.doingst
FifteenyearsagoMasco,asmallfamilyfirm,suddenlygrewfast.Asitgrew
中枢化学感受器位于()。A.大脑皮层 B.延髓腹侧外部 C.脑桥 D.下
《建设工程安全生产管理条例》规定,因建设工程施工可能造成损害的毗邻建筑物、构筑物
常言说“巧妇难为无米之炊”,这句话在公文写作中常指()。A、主旨的重要性 B
β-内酰胺类抗生素的抗菌作用机制是()A:抑制二氢蝶酸合成酶 B:抑制细菌核
男性,66岁。劳累时胸骨后疼痛1年余,每周2~3次,含服硝酸甘油后迅速缓解。4小
患者,男,48岁。眼睑、面部浮肿,逐渐波及下肢,小便量少,常感心慌、心悸,失眠。
农民是乡村振兴的主体,也是受益者,必须要把亿万农民群众的积极性、主动性、创造性调
运输业的生产具有( )特征。 A.点状 B.线状 C.块状
最新回复
(
0
)