膜分离过程中,膜的作用是选择性地让小于其孔径的物质颗粒成分或分子通过,而把大于其孔径的颗粒截留。
参考答案:对
阅读理解。
1. You love basketball very much. You may watch TV at ______.
A. 19:00 on Channel 2
B. 19:40 on Channel 1
C. 20:20 on Channel 2
D. 21:15 on Channel 1
2. What time can we watch TV plays on Channel 1?
A. At 18:30.
B. At 21:45.
C. At 21:15.
D. At 20:10.
3. At 18:30, we can learn ______on Channel 2.
A. English
B. art
C. music
D. computer
4. I want to watch English news on TV. I can watch TV at______.
A. 19:00 on Channel 1
B. 21:00 on Channel 1
C. 18:30 on Channel 2
D. 21:45 on Channel 2
5. You can ______ at 21:15 on Channel 1.
A. watch a TV play
B. listen to music
C. watch NBA
D. listen to the news
《中 * * 党纪律处分条例》规定,留党察看处分,分为留党察看一年、留党察看二年,最长不得超过二年。