问题 问答题 简答题

值班调度员在操作前,应做好哪些工作?

答案

参考答案:

1.电网的操作应根据设备调度管辖范围的划分规定,实行分级管理,各级调度值班调度员对其调度管辖范围内的设备行使调度操作指挥权。值班调度员在决定倒闸操作前,应做好下列准备工作:

2.充分理解电网操作的目的,分析电网运行方式的改变是否正确、合理和安全可靠。

3.将操作范围、工作内容、工作单位实际运行接线方式与现场核对清楚,要特别注意挂、拆地线地点和拉、合接地隔离开关(俗称接地刀闸)的顺序,防止带电挂地线或合接地隔离开关,防止带负荷拉隔离开关及向未接地开关的设备送电。

4.将有关方式、继电保护及有关稳定极限规定等资料查看齐全,全面考虑操作内容,并根据调度模拟屏和计算机画面标示的实际运行情况模拟操作步骤,以保证操作程序的正确性。

5.复杂操作要预先通知有关单位,与现场核对运行方式,征求操作意见,并将电网运行方式的变化及事故处理原则及对策等通知有关单位。

6.特殊情况下(如通信中断等),上级可委托下级调度或厂、站(所)的运行值班人员对上级调度管辖范围内的设备发布调度指令,但这种委托应按正常要求逐级下达,并记好记录。

阅读理解

阅读理解。

     In 1901, H. G. Wells, an English writer, wrote a book describing a trip to the moon. When

the explorers (探险者) landed on the moon, they discovered that the moon was full of underground

cities. They expressed their surprise to the "moon people" they met. In turn, the "moon people"

expressed their surprise. "Why," they asked, "are you traveling to outer space when you don't even

use your inner space?"

     H. G. Wells could only imagine travel to the moon. In 1969, human beings really did land on the

moon. People today know that there are no underground cities on the moon. However, the question

that the "moon people" asked is still an interesting one. A growing number of scientists are seriously

thinking about it.

     Underground systems are already in place. Many cities have underground car parks. In some

cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The

"Chunnel", a tunnel (隧道) connecting England and France, is now complete.Uncle Tom gave little

Vicki Black a birthday gift one week before her birthday. He told her not to open it until her birthday.

She knew her mother wouldn't tolerate any disrespect to the kind man who helped them out after

Vicki's father passed away. Besides, Vicki didn't want Uncle Tom to get angry. But little Vicky didn't

want to just hold it and guess what was in it. After all, she looked forward to his coming to show her

interesting things, like how to turn an old sock into a doll.

     All the day, Vicki couldn't stop thinking about the gift. While her teacher was giving a lecture? Vicki

sat still in her seat, drawing paper dolls inside the box. When school was done, she raced home.

Walking into the room, again, she shook the present, but she heard nothing. Holding her breath, she

opened the box and looked inside. Seconds later, she cried. When Mrs. Black saw the box, she said

angrily, "Didn't I tell you to leave it alone?" Vicki sobbed and said, "Mommy, you don't understand."

     "Don't cry to me. You have missed everything now, just because you couldn't wait," Mrs. Black

accused. "What will Uncle Tom think now?"

     "Uncle Tom gave me nothing," Vicki cried and handed the empty box to her mother. "He played

a trick on me."

      Mrs. Black said doubtfully, "Uncle Tom is not like that. You must have dropped it."

     Vicki kept crying. Only a rapid knock on the door made the house quiet. It was Uncle Tom. He

looked at the empty box. "You have already done it? I told you to wait for your birthday."

      "You didn't give me a gift." Fresh tears filled her eyes.

     "I try to give you something. I know your birthday is a special day. I tell myself to give you

something valuable to last your whole life. I think hard and get the idea to give you an important lesson.

If you open it on birthday, I see you learn. Then I will make a big party to celebrate. Maybe next year

you listen and then you will understand the gift better."

     Vicki's cheeks flushed(脸红).

1. We can learn from the text that Vicki_______.

A. often received gifts from her father          

B. expected Uncle Tom to give her a doll

C. was sad because of her father's death        

D. liked and respected Uncle Tom

2. What do the underlined words "done it" refer to?

A. Guessed the result                      

B. Opened the box

C. Realized Uncle Tom's purpose            

D. Known what her birthday gift was

3. What kind of person is Uncle Tom?

A. Thoughtful        

B. Humorous        

C. Mysterious        

D. Funny

4. What did Uncle Tom want to teach Vicki?

A. How to respect others                  

B. The meaning of gifts

C. How to deal with gifts                  

D. The value of a promise

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