直流屏如何操作？
参考答案：
（1）操作前检查直流屏柜各元件无损坏，接线无松动，电池无异常，各路输出开关在断开位置；
（2）合交流电源开关，给直流屏模块及电池送电；
（3）合直流电源开关，向合闸控制母线供电；
（4）分别合各路输出开关；
（5）停电顺序与上相反；
（6）某段母线上设备无操作时，应断开相应的合闸电源，有操作时再合上，操作完毕后马上断开。
| 用方框中所给单词的正确形式填空 | |
2. Mr. Wang is a _ of Beijing University. 3. There is always a sweet smile on her face. She is__ to everyone. 4. Our English teacher is_ with us. 5. There _ two parks in my hometown last year. 6. —What is the boy like? —He is very______.He never listens to the teacher in class. 7. Beijing is the______largest city in China. 8. Who was your______teacher? 9. We can see lots of fish in the big______. 10. I am going to see my grandma______my sister. |