问题
问答题 简答题
离心泵填料松紧程度掌握方法是什么？
答案
参考答案：
一是填料的松紧程度必须适当，不可太紧，也不可太松，以液体能一滴滴渗出为准；
二是填料太紧轴套易发热，同时消耗功率；
三是填料太松液体渗漏量大，降低水泵效率。
搜题请搜索小程序“爱下问搜题”
离心泵填料松紧程度掌握方法是什么？
参考答案：
一是填料的松紧程度必须适当，不可太紧，也不可太松，以液体能一滴滴渗出为准；
二是填料太紧轴套易发热，同时消耗功率；
三是填料太松液体渗漏量大，降低水泵效率。
| 用方框中所给单词的适当形式填空 | |
to see me because they are sad or nervous. Sometimes (2)__________ helps. Sometimes talking helps. But many doctors (3)__________ that music can help people feel better. I asked a few of my patients(病人) how music helps them. "Sometimes I was (4)__________ when I was a child. My family said, play your feelings on the piano! Sometimes I play a loud (5)__________ on the piano. Soon I feel calm(平静的). I can laugh and cry through my(6)__________ on the piano. It's natural for me. It's like breathing." "Listening to music helps me feel(7)__________. I like to listen to music and dance when I (8)__________ my house." "I play the violin. I like playing at night (9)__________ it is quiet. After playing I am tired and I am happy. I always sleep (10)__________ after playing my violin." Are you a musician? Good! Keep playing. If you are not a musician, listen to music and sing or dance. It's good medicine. |