问题 问答题 论述题

吊装电气绝缘子时应注意哪些内容,为什么?

答案

参考答案:应注意内容及原因如下:

(1)未装箱的瓷套管和绝缘子在托运时,应在车辆上用橡皮或软物垫稳,并与车辆相对固定,以免碰撞或摩擦造成损坏;竖立托运时应把瓷管上中部与车辆四角绑稳。

(2)对于卧放运输的细长套管,在竖立安装前必须将套管在空中翻竖,在翻竖的过程中,套管的任何一点都不能着地。

(3)起吊用的绑扎绳子应采用较柔的麻绳,如所吊的绝缘子较重而必须用钢丝绳起吊时,绝缘子的绑扎处用软物包裹,防止损坏绝缘子。

(4)起吊升降速度应尽量缓慢、平稳,如果采用的吊装起重机的升降速度较快,可在起重机吊钩上系挂链条葫芦,借以减慢起吊速度,在安装就位过程中进行短距离的升降。

(5)对于细长管、套管、绝缘子(变压器套管,电压互感和避雷器等)的吊耳在下半部位置时,吊装时必须用麻绳子把套管和绝缘子上部捆牢,防止倾倒。

多项选择题
阅读理解

Today,we are told,children don’t spend enough time in the fresh air.Many of them are addicted to a screen either on a computer or a TV—they seem to be living in a virtual world.They have lost touch with nature.

But now 400 organizations in the UK,from playgroups to the National Health Service,are encouraging children to have some“wild time”.They want kids to swap at least 30 minutes of watching TV or playing computer games for time playing outside.Activities such as building dens, climbing trees, rummaging for conkers and playing hide and seek are just some of the things kids can do. Even if they live in a city,they can go on adventures in the garden or the park.

Children often need a helping hand from mum and dad.They need to be shown what to do and where to go.Andy Simpson from National Health Service says,“We want parents to see what this magical wonder product does for their kids’ development,independence and creativity,by giving wild time a go”.

So despite the complicated world that young people grow up in now,it seems that going back to basics and experiencing“nature’s playground”is what modern children need.David Bond from Project Wild Thing says,“We need to make more space for wild time in children’s daily routine,freeing this generation of kids to have the sort of experiences that many of us took for granted”.

This might sound a bit old fashioned to you or maybe,like me,it’s made you think about sticking on your boots,getting outdoors and reliving your childhood.There’s no age limit on enjoying yourself!

小题1:What is the best title of the text?

A.Wild time for children

B.Benefits of wild time

C.More space for children

D.Adventures of children小题2:Children are encouraged to do the following activities except       

A.building dens

B.climbing trees

C.playing hide and seek

D.watching TV小题3:According to Andy Simpson,we know that      

A.wild time is hard to design

B.wild time is beneficial for children

C.parents know the importance of wild time

D.parents like keeping their children indoors小题4:What’s the main idea of Paragraph 4 ?

A.Modem children need wild time.

B.Adults value outdoor activities.

C.The present world is complicated.

D.This generation of kids have no freedom.小题5:The last paragraph suggests that       

A.people like recalling the past

B.it is out of date to go outdoors

C.it is too late for adults to enjoy nature

D.people at any age can enjoy wild time