问题 问答题 简答题

电力市场中为什么电网必须提供运转业务?包括那些费用?

答案

参考答案:

随着发电市场的形成,由于电网中存在着多种形式的不同发电公司,这些发电公司的电量不只向本地区销售,而且还向其它地区销售,由于发电公司部拥有输、配电电网,因此电网经营企业就必须提供相应的运转服务;同时随着电力体制改革的深入发展,用户市场也将逐步开放,而用户市场的开放,必然使用户具有自由选择供电的权利,这也要求电力企业提供相应的运转服务;同样多区域互联电网间的功率交换及发电公司和用户之间的自由选择、公平竞争,也需要电网经营企业提供相应的运转业务,因此电力市场的建立,必然要求电网经营企业开放输、配电网络,并提供相应的运转业务。

为了电网的不断扩大以便好好发展,提供电能运转业务的电网,应该是有偿服务,其运转服务主要包括网损、电网维护及电网基本建设三个方面的费用。

完形填空
完型填空。(每小题2分,共20分)
根据短文内容,从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。
Every year thousands of people get hurt or die when they are crossing the road. Most of these people are old people and children. Old people often get hurt or die because  1  can’t see or hear very well. Children usually meet with accidents because they are   2 . They forget to look around   3  they cross the road.
How can we lessen (减少) traffic accidents? All of us must   4  the traffic rules. For the drivers, they shouldn’t drive too fast. If they drive too fast, it will be very difficult to stop the  5 in a very short time. For the pedestrians(行人),it’s very important to be careful while they are   6  on the road. Therefore, when we walk   7  the road, we must try to walk along the pavements(人行道). We must stop and look   8  ways before crossing the road. Look left first, next look right, and then look left again. Only when we are sure that the road is clear, we can cross it. The right way to cross the road is to walk   9 . It’s not safe to walk too slowly or run fast. If people run across the road, they may   10 . As teenagers, we should try to help children, old people or blind people to cross the road. The last one is that we should never play in the street.
小题1:
A.weB.theyC.heD.them
小题2:
A.happyB.youngC.carelessD.sad
小题3:
A.afterB.beforeC.althoughD.if
小题4:
A.obeyB.makeC.breakD.set
小题5:
A.oldB.youngC.carD.train
小题6:
A.walkingB.drivingC.cleaningD.standing
小题7:
A.throughB.overC.acrossD.off
小题8:
A.allB.bothC.eitherD.neither
小题9:
A.quicklyB.slowlyC.happilyD.safely
小题10:
A.fall behindB.fall downC.lie downD.set off
选择题