为什么直流电机换向片之间的绝缘采用云母材料？
题型：问答题 简答题
问题：
为什么直流电机换向片之间的绝缘采用云母材料？
题型：问答题 简答题
阅读理解。
we surveyed (调查) 300 young people on what they like to do at weekends: one hundred people are from the
ages of 11-18, one hundred l9-26 and one hundred 27-35. The following shows their answers:
1. How many people enjoy playing computer games in the 11-18 group? [ ]
A. 20.
B. 50.
C. 60.
D. 75.
2. The people of l9-26 enjoy _______ most. [ ]
A. watching TV
B. going to the movies
C. playing computer games
D. taking a walk
3. According to the survey, which two activities do most people enjoy doing? [ ]
A. Playing computer games and watching TV.
B. Playing computer games and taking a walk.
C. Watching TV and going to the movies.
D. Going to the movies and taking a walk.
4. From the chart above, we can see the older people are, the more they like ______. [ ]
A. watching TV
B. taking a walk
C. going to the movies
D. playing computer games
5. Which of the following is TRUE according to the chart? [ ]
A. Fewest people like taking a walk.
B. The people of l l-18 like taking a walk most.
C. 90 people like going to the movies in the l9-26 group.
D. The people of 27-35 like playing computer games most.