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The difference between a liquid and a gas is obvious【C1】______the conditions of temperatur

e 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.

【C1】

A．in

B．on

C．under

D．beyond

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发布时间：2020-08-26

更多“The difference between a liquid and a gas is obvious【C1】______the conditions of temperatur”相关的问题

第1题

______lie（s)between the boundary of Canada and the U. S. and serve（s)as the boundary betwe

______lie(s)between the boundary of Canada and the U. S. and serve(s)as the boundary between the two countries.

A．The Mississippi River

B．The Great Lakes

C．The Rocky Mountains

D．The Grand Canyon

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第2题

Paragraph 5_________ A Making friends with new acquaintancesB Close link betwe

Paragraph 5_________

A Making friends with new acquaintances

B Close link between companionship and belongingness

C How to satisfy other people's needs

D An example of a satisfying relationship

E Difficulties in establishing friendships

F What companionship really is

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第3题

9：What is the passage mainly about？A.Similarities in the interpersonal relationships betwe

9：What is the passage mainly about？

A.Similarities in the interpersonal relationships between urbanites and small-town dwellers.

B.Advantages of living in big cities as compared with living in small towns.

C.The positive role that urbanism plays in modern life.

D.The strong feeling of alienation of city inhabitants.

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第4题

What does Student B mean when he says this？A．The difficulty lies in the relationship betwe

What does Student B mean when he says this？

A．The difficulty lies in the relationship between their fingertips.

B．Nobody can see his future by just studying his hands.

C．Everybody needs help to understand how to achieve financial security.

D．People tend to miss out on financial opportunities.

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第5题

听力原文：Just because you're on a diet doesn't mean you can't snack. In fact, eating betwe

听力原文： Just because you're on a diet doesn't mean you can't snack. In fact, eating between meals is important for weight loss; the diet we're putting you on emphasizes numerous small meals over fewer large meals. Snacking will give you the energy you need and help satisfy your hunger. But choose your snacks wisely. Munch on fruits or vegetables when you get the urge. They provide vitamins and are good for your digestion. Remember: "eat little and eat often" works as a philosophy that will lead you back to health.

What is the speaker mainly talking about？

A．Explaining how important vitamins are

B．Describing procedures for losing weight

C．Instructing how to choose snacks

D．Informing of snacking for health

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第6题

听力原文：Leo Tolstoy was a famous Russian writer of the nineteenth Century. He lived betwe

听力原文： Leo Tolstoy was a famous Russian writer of the nineteenth Century. He lived between 1828 and 1910. He wrote many novels. Two of his most famous works are War and Peace and Anna Karenina.

Tolstoy was born into a wealth family. However, he was not happy that others were poor. He did not like living the rich life when others did not have food or money. In fact, Tolstoy often dressed like a peasant. He wanted the simple life.

In his novels, Tolstoy wrote about many things, but one of his most important themes was nonviolence. His ideas about nonviolence influenced two other famous leaders: Mahatma Gandhi and Martin Luther King. In fact, Tolstoy and Gandhi wrote letters to each other when Gandhi was in South Africa. Tolstoy's ideas helped Gandhi to use nonviolence.

Martin Luther King, the American civil rights leader, also believed in nonviolence. In his demonstrations during the 1960s, he always avoided violence. He helped to win more rights for Blacks.

Thus, Tolstoy the great Russian writer of the nineteenth century, greatly influenced two other great leaders of the peace movement.

(30)

A．A peasant.

B．A famous man.

C．A Russian.

D．A writer.

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第7题

An Intelligent CarDriving needs sharp eyes, keen ears, quick brain, and coordination betwe

An Intelligent Car

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What is the virtual driver's best advantage？ He reacts(58) . The minicameras are(59)images continuously to the "brain." It(60)the processing of the images within 100 milliseconds. However, the world's best driver(61)needs one second to react.(62) , when he takes action, he needs one more second.

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A．these

B．them

C．this

D．that

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第8题

回答题。 Relationship between Morals and ArchitectureThere is a closer relationship betwe

回答题。

Relationship between Morals and Architecture

There is a closer relationship between morals and architecture and interior decoration 51 we suspect. Huxley has pointed out that Western ladies did not take frequent baths 52 they were afraid to see their own naked bodies, and this moral concept delayed the 53 of the modern white-enameled bathtub for centuries. One can understand 54 in the design of old Chinese furniture there was so little consideration for human 55 only when we realize the Confucian atmosphere in which people moved about. Chinese redwood furniture was designed for people to sit 56 in, because that was the only posture approved by society.

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材料题请点击右侧查看材料问题查看材料

A.for

B.than

C.as

D.that

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第9题

At Seattle this year, the difference between America and the EU is over ______.A．e-commerc

At Seattle this year, the difference between America and the EU is over ______.

A．e-commerce

B．WTO transparency

C．agenda

D．tariffs

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第10题

A.The difference between a job description and job specification.B.The difference

A.The difference between a job description and job specification.

B.The difference between what is taught, and how it is taught.

C.The difference between the costs and the quality of the programme.

D.The difference between the training contents and methods required.

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第11题

Explain the difference between an adsorption chromatography and a partition chromatography.

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