【单选题】在恒定温度下,向一个容积为2dm 3 的抽空容器中,依次充入初始状态为100 kPa,1 dm 3 的气体A和200 kPa,1 dm 3 的气体B。A、B均可当做理想气体,且A、B之间不发生化学反应。容器中混合气体的总压力为:
【单选题】在恒定温度下向一个容积为 2dm 3 的抽空容器中依次充入初始状态为 100kPa 、 2dm 3 的气体 A 和 200kPa 、 1dm 3 的气体 B 。 A 、 B 均可当作理想气体且 A 、 B 间不发生化学反应 , 则容器中混合气体总压力为:
【单选题】在恒定温度下,向一个容积为4dm 3 的抽空容器中,依次充入初始状态为100KPa,2dm 3 的气体A和200KPa,1dm 3 的气体B。A,B均可当作理想气体,且A,B之间不发生化学反应。容器中混合气体总压力为( )
【单选题】在恒定温度下,向一个容积为 2dm 3 的抽空容器中,依次充入初始状态为 100kPa , 2dm 3 的气体 A 和 200Kpa , 1dm 3 的气体 B 。 A , B 均可当作理想气体,且 A , B 之间不发生化学反应。容器中混合气体总压力为( ) KPa 。
【单选题】听力原文:W: What is the most common means of transport for Chinese people nowadays? M: To most Chinese people, the most common means of transport is the bus. W: Does the railway have less of an influence ...
A.
The railway has less of an influence now than previously on people's lives.
B.
Chinese people depend more on the railway than other means of transport.
C.
People used to depend on the railway.
D.
Many residents are very interested in purchasing personal cars.
【单选题】Which group of people are most likely to form. the main market for this product?
A.
People who show great interest in novelty items.
B.
People who work at railway or bus stations.
C.
People who travel on trains and buses regularly.
【简答题】W hat kind of life do most people enjoy?英译汉
【单选题】在恒定温度下,向一个容积为 2dm 3 的抽空容器中,依次冲入初始状态为 100kPa , 2dm 3 的气体 A 和 200kPa , 1dm 3 的气体 B 。 A 和 B 都可当作理想气体,且 A , B 之间不发生化学反应。容器中混合气体总压力为 。
【单选题】听力原文:W: Frank, what's your impression of English people? M: Well, they are the most reserved, the most suspicious, the most unreceptive, the most unfriendly, the coldest-h, and the most domineering of...
A.
The Englishmen's habits.
B.
The Englishmen's accent.
C.
The Englishmen's character.
D.
The Englishmen's teaching styles.
【单选题】听力原文:W: Johnny, what's your impression on English people? M: Well, they are the most reserved, the most suspicious, the most unreceptive, the most unfriendly, the coldest-hearted, and the most dominee...