问题
问答题
绿豆砂保护层中选用绿豆砂的质量要求是什么
答案
参考答案：绿豆砂保护层选用绿豆砂的质量要求是，石子粒径为3～5mm，应色浅、清洁．经过筛选，颗粒均匀，并用水冲洗干净。
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绿豆砂保护层中选用绿豆砂的质量要求是什么
参考答案：绿豆砂保护层选用绿豆砂的质量要求是，石子粒径为3～5mm，应色浅、清洁．经过筛选，颗粒均匀，并用水冲洗干净。
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| A professor told students to go into the city slums (贫民窟) to study the life of 200 boys. He asked them to 1 reports (报告) about each boy's life and future. Most of the students wrote, "He doesn't have any hope." Twenty-five years 2 , another professor read about the earlier reports. He told his students to 3 what happened to the boys, They tried very hard and found that 176 of the boys had become successful 4 doctors, teachers or scientists. The professor was very 5 and decided to study it further. Luckily, all the men were living in the same city and he was able to visit and ask each one,"What made you 6 ?" They all answered, "They was a good teacher." The teacher was 7 living there, so the professor found her and asked the old lady 8 she had pulled those boys out of the slum, and changed them into successful people. The teacher's 9 began to shine and said with a sweet smile, "It's really very easy, I 10 those boys. I'm proud of them." | |||
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