题目内容

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

查看答案
更多问题

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.

Task 2: Listen to the dialogue twice and decide whether the following statements are True (T) or False (F).[音频]( )1. Smith looks unhappy because of the bad weather.( )2. Smith is very good at English.( )3. English is a required course for both Tom and Smith.( )4. Smith can follow the teacher easily in class.( )5. Tom is ready to help Smith with English.

品牌是法律概念,商标是市场概念。

A. 对
B. 错

品牌对于消费者主要是识别作用

A. 对
B. 错

答案查题题库