问题 问答题

简述电气系统操作原则。

答案

参考答案:

1.操作人员按调度预先下达的操作任务(操作步骤)正确填写操作票。

2.经审票并预演正确或经技术措施审票正确。

3.操作前明确操作目的,做好危险点分析和预控。

4.调度正式发布操作指令及发令时间。

5.操作人员检查核对设备命名、编号和状态。

6.按操作票逐项唱票、复诵、监护、操作,确认设备状态变位并勾票。

7.向调度汇报操作结束及时间。

8.做好记录,并使系统模拟图与设备状态一致,然后签销操作票。

9.开关、闸刀(接地刀除外)的操作正常时应在NCS操作画面上操作,只有在事故或NCS故障情况下,才允许就地操作(NCS故障下要办理有关手续)。

10.操作中发现问题应停止操作,汇报上级,弄清楚后再继续操作。

填空题

Part 4


Questions 26-45


·Read the following passage and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation (26) high school sports is not a constitutional right. (27) , it is a privilege, paid for by taxpayers, open to students who promise to (28) certain conduct requirements on and off the field. One of these promises is to (29) from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs, (30) cause discipline problems and (31) the stage for lifelong (32) .
Drug testing works to (33) and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League. (34) drug testing was instituted by these organizations, use of performance- (35) drugs has been greatly reduced. We should want (36) in schools.
Indeed, many athletes (37) testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage (38) the field.
Those who challenge the need for drug testing may be forgetting (39) it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is (40) , a school can (41) to the student before he or she gets addicted or arrested.
For 25 years, public schools (42) by federal judges and civil libertarians, with results everyone can see. It is time (43) decisions on how to run public schools locally (44) officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (45) .

A.alone

B.behind

C.out

D.off

单项选择题