问题
问答题 简答题
密封结构的基本要求有哪些？简要说明影响密封的主要因素？
答案
参考答案：
1在正常操作和压力、温度有波动的情况下，都必须能保证容器的密封性，这是最基本和最重要的要求。2结构简单、紧凑，便于加工制作、装拆检修。3密封件的材料应耐腐蚀，且能多次重复使用。
因素：1螺栓的预紧力2垫圈的性能3法兰的刚度4操作条件。
搜题请搜索小程序“爱下问搜题”
密封结构的基本要求有哪些？简要说明影响密封的主要因素？
参考答案：
1在正常操作和压力、温度有波动的情况下，都必须能保证容器的密封性，这是最基本和最重要的要求。2结构简单、紧凑，便于加工制作、装拆检修。3密封件的材料应耐腐蚀，且能多次重复使用。
因素：1螺栓的预紧力2垫圈的性能3法兰的刚度4操作条件。
| 完形填空。 Seven cats are good friends. They live in the same town. They always go 1 together on Saturdays. Every time one of them finds a place to go. Today, a 2 called Mimi should find a place, but she doesn't give 3 calls to her friends. The other cats are angry (生气). They all go to Mimi's house and ask her, "You give us no call. 4 ?" Mimi hears (听到) this and begins to cry. She 5 , "I will move to a new house with my father. It is in another town. I can't go shopping with you 6 ." Her friends hear that and talk for a long time. Then they have an idea. "Don't 7 . We will go to that town and do the shopping 8 your new house." Mimi is very happy. She jumps high. Two days later, Mimi comes to her friends and says, "I don't need to move. My father 9 a new job here in this town." Her friends are happy again. They still go shopping together on 10 . | ||||
|