问题
问答题 简答题
凝结器铜管防腐措施有哪些？
答案
参考答案：
合理选用管材；根据水质情况选择合适的循环水处理方式；保持适当的水流速度；安装前进行退火处理以消除应力；在管束之间嵌塞竹片或木板条等，不让其有活动余地，以防震动；做好铜管投运前的维护和安装工作；进行造膜保护；进行阴极保护（主要保护水室、管板和管端）；在铜管端部加装套管或涂防腐材料；定期胶球冲洗。
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凝结器铜管防腐措施有哪些？
参考答案：
合理选用管材；根据水质情况选择合适的循环水处理方式；保持适当的水流速度；安装前进行退火处理以消除应力；在管束之间嵌塞竹片或木板条等，不让其有活动余地，以防震动；做好铜管投运前的维护和安装工作；进行造膜保护；进行阴极保护（主要保护水室、管板和管端）；在铜管端部加装套管或涂防腐材料；定期胶球冲洗。
When my son, Justin, was four, he found a caterpillar（毛毛虫）and put it in a box. Each day he it fresh grass and leaves . In a few weeks, the caterpillar became fat and was ready to sleep. One morning we found had become a cocoon(茧). Justin was . He knew a moth（飞蛾）or butterfly was going to be . “Dad ! is happening. Come and look!” He shouted happily. We could clearly see the wings . A few days later, a beautiful black moth broke free from its cocoon. The next day, Justin took the outside and opened it, and the little moth flew out. It flew around the yard twice, , and landed on Justin’s arm. He picked it up and threw it in the air, the moth came back again. He tried over and over to set it free, but each time it would return to his arm. I believe the moth, just like a person, was afraid to comfortable places and situations. It wanted to stay with something and was afraid to move on and experience new things. I was once that little moth. My cocoon was my mother’s love which made me comfortable. the moth, I didn’t want to fly too far from it. When my first job required me to move to a new city, I was but later I chose to move there. And finally, I found I was happy about my . Humans are animals of habit. We change. However, if we hadn’t moved, we would not have experienced many new things. So spread your wings and fly.
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