问题
问答题 简答题
简述三阶段预应力水泥管的制作工艺。
答案
参考答案：三阶段管是指一根管材分三个阶段制成，第一阶段先做成一个带纵向预应力钢丝的砼管芯，第二阶段在硬化了的管芯外缠环向预应力钢丝，第三阶段在钢丝外作水泥砂浆保护层，进行养护。
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简述三阶段预应力水泥管的制作工艺。
参考答案：三阶段管是指一根管材分三个阶段制成，第一阶段先做成一个带纵向预应力钢丝的砼管芯，第二阶段在硬化了的管芯外缠环向预应力钢丝，第三阶段在钢丝外作水泥砂浆保护层，进行养护。
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| The story tells us about the British writer, Richard Savage. He was once living in London with 1 money in his pockets. In order to get some food and clothes he wrote the story of his life and managed to have it 2 . But not many copies of his books were 3 in the shops, and he was still living a hard life. Because of anxiety and malnutrition, he became very weak and before long fell 4 , and a doctor was sent for. The doctor was not rich enough, but 5 literature. He tried his best to cure Savage of his illness and a week later Savage was out of 6 When he finally recovered his 7 , the doctor sent a bill to Savage for his 8 , but poor Savage had no money to 9 it. The doctor waited for a month and sent another bill. 10 no money again, the doctor went to Savage himself. "You know you 11 your life to me," said the doctor, "and I should 12 some thankfulness from you." "I 13 ," said the writer, "you've done a great favour for me and to 14 that I'm not ungrateful for your kindness, I'll 15 my life to you." With these 16 he handed the doctor two copies of The Life of Richard Savage. The doctor took the books home and began to 17 them carefully. "I see I've 18 the life of a great writer," the doctor said to himself with a sense of pride. "Maybe this is the only thing I could be really 19 in my life." Five years later Savage called on the doctor to pay his bill, only to find that the doctor had already 20 . | ||||
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