问题
多项选择题
先张法预应力工艺（相对后张法）的优点是（）。
A.工序少
B.效率高
C.质量易保证
D.工艺较简单
E.适用于大断面构件的现场预制
答案
参考答案：A, B, C, D
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先张法预应力工艺（相对后张法）的优点是（）。
A.工序少
B.效率高
C.质量易保证
D.工艺较简单
E.适用于大断面构件的现场预制
参考答案：A, B, C, D
George and Betty didn’t have much money, but they wanted to buy a car. Betty didn’t have a , so she was always finding ways to save money. She grew vegetables in her garden so that she wouldn’t have to buy any. She made sandwiches for George to to work so that he wouldn’t have to buy his lunch. Every day, George took the bus to go to work and go home. It was not a long trip the bus was slow because of traffic. One day, the traffic was even than usual. “I could run faster than this bus!” thought George. The next day work he decided to have a try. He went to the bus stop, but didn’t the bus. He ran along beside it in the sidewalk. He had to run fast to catch up with the bus. He arrived home. Betty was to see him painting (气喘). She was worried. “What’s the matter?” “I ran along beside the bus,” said George. “I saved two dollars and fifty cents paying the fare.” He thought it would make Betty happy, but it didn’t. “ didn’t you run beside a taxi?” she said, “You would have saved six dollars!”
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