问题 问答题 简答题

如何进行张力放线?

答案

参考答案:

张力放线的工序为展放导引绳、展放牵引绳、展放导线和锚线四个工序。

(1)展放导引绳:在放线区段内用人力将导引绳展放在放线滑车上,全段放通;导引绳展放完毕后,两端临时锚固,使之保持一定张力,对地距离不低于5m。

(2)展放牵引绳:已展放的导引绳一端与小张力机上的牵引绳连接,另一端与小牵引机连接,开动小牵引机和小张力机,用导引绳牵引牵引绳,当导引绳全部收回后,原来导引绳在滑轮上即为牵引绳所代替,将牵引绳两端临锚,保持一定的对地距离。

(3)展放导线:牵引绳一端与牵引机相连,另一端通过旋转连接器、走板、蛇皮套与两根或四根导线相连接,导线缠绕在大张力机的张力轮上,先开动张力机,再开动牵引机,调整放线张力和牵引张力,使各子导线张力一致并符合设计张力,当全部牵引绳被回收后,各子导线即在全区段放通,在导线两端临锚,即完成了张力放线全过程。

单项选择题 A1/A2型题
单项选择题

An eight-year-old child heard her parents talking about her little brother. All she knew was that he was very sick and they had no money left. When she heard her daddy say to her (1) mother," (2) a miracle can save him now", the little girl went to her bedroom and took out her piggy bank. She (3) all the change out on the floor and counted it carefully. Then she (4) her way six blocks to the drugstore.

"And what do you want" asked the shopkeeper. "It’s (5) my little brother," the girl answered back. "He’s really, really sick and I want to buy a (6) . His name is Andrew and he has something (7) growing inside his head and my daddy says only a miracle can save him. " "We don’t (8) miracles here, child. I’m sorry." the chemist said, smiling (9) at the little girl.

In the shop was a (10) customer. He stooped down and asked the little girl, "What kind of miracle does your brother (11) " "I don’t know," she replied. "He’s really sick and mommy says he needs (12) . But my daddy can’t pay for it, so I have brought my (13) .""How much do you have" asked the man. "One dollar and eleven cents, (14) I can try and get some more," she answered quietly. "Well, what a coincidence," smiled the man. "A dollar and eleven cents—the (15) price of a miracle for little brothers. (16) me to where you live. I want to see your brother and (17) your parents. "

That well-dressed man was Dr Carlton Armp, a doctor. The operation was completed without any (18) and it wasn’t long before Andrew was (19) again. The little girl was happy. She knew exactly how much the miracle cost—one dollar and eleven cents—also the (20) of a little child.

6()

A.hope

B.doctor

C.favor

D.miracle