题目内容

气态物质全部变为液态需经何种状态?

A. 必须经过气、液两相平衡的共存状态
B. 不可能经过气、液两相平衡的共存状态
C. 不一定要经过气、液两相平衡的共存状态
D. 以上均不正确

查看答案

搜索结果不匹配？点我反馈

更多问题

在给自行车轮胎打气时,充人轮胎的气体温度应如何变化?

A. 升高;
B. 降低
C. 不变
D. 无法判断

摩尔气体常数R具有什么量纲?

A. 能量/（温度摩尔）
B. 能量温度/（摩尔）
C. 能量温度-1（摩尔）

下列对某物质临界点性质的描述,哪一种是错误的?

A. 液相与气相的相界面消失;
B. 汽化热为零:
C. 液相摩尔体积与气体摩尔体积相等;
D. 气、液、固三相共存

Read the passage and complete the following statement by filling in the blanks.1. With the development of science and technology, the world is getting smaller and becoming more like a village. So English has become an __ language.2. Speaking and understanding English can let a person find more job not only in his or her home country, but around the world as well.3. Understanding English is helpful to explore the world and have a better understanding of the countries.4. The way people speak, the words they choose, and the topics under discussion are deeply tied into the of a place.5. If you are going to attend a university in the US, you need to be able to pass a _ proving that you are fluent in English.