不停电作业的安全注意事项有（）。
A.保护安全距离
B.带电部分在工作人员一侧
C.时间不宜太长
D.挂标示牌
E.专人监护
参考答案：A, B, C, E
根据所给的词，写出正确的单词形式。
1. _________ (one) of all you must close the door.
2. Everybody is _________ (suppose) to know the dancer.
3. You must take care of yourself and keep _________ (health).
4. She is a _________ (luck) girl.
5. The boy is _________ (bad) than yesterday.
6. He _________ (choose) a toy just now.
7. We are _________ (Asia).
8. The _________ (speak) are Tom and Linda.
9. These are our _________ (report card).
10. She _________ (copy) my homework every day.
干燥过滤器的作用是吸附制冷系统中（）和（）。
