问题
问答题 简答题
离心泵的轴承可能会发生哪些故障？
答案
参考答案：
①轴套衬里质量不好，间隙过紧或过松。
②滚动轴承的滚球碎，内、外圈断，隔离架坏或脱落。
③冷却水供应不足或中断。
④轴承不能正常工作，窜轴，转子不平衡。
⑤润滑油的压力不够，质量不好，供应中断。
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离心泵的轴承可能会发生哪些故障？
参考答案：
①轴套衬里质量不好，间隙过紧或过松。
②滚动轴承的滚球碎，内、外圈断，隔离架坏或脱落。
③冷却水供应不足或中断。
④轴承不能正常工作，窜轴，转子不平衡。
⑤润滑油的压力不够，质量不好，供应中断。
| 完形填空。 | ||||
| Tom is six now. His mother __1__ in a factory. She's busy all the time. She must __2__ at six in the morning. Then she cooks __3__ for her family. She goes to work with some __4__. So she can have lunch in the factory. At six she comes back and cooks supper __5__. After she does some housework, she often __6__ she's tired. So she wants to have a good holiday. "What do you want for a holiday?" "I want to have a good rest." says the woman, "I can take you to the zoo to see __7__." Tom likes the dolphins very much and __8__ wants to see the elephants. September is coming and a new __9__ begins. His mother asks, "Would you like to go to school, my dear?" "I'd love to." says the boy. "__10__ I'm going to have a holiday, too." | ||||
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