备用轴加风机倒转如何处理？
参考答案：
备用轴加风机倒转，应关闭其进口或出口门（最好是进口门，因每个风机底部有一不带阀门的放水管，往里吸气，影响轴加的微负压）。但应注意，轴加风机有电气联锁，若运行风机跳闸，备用风机自动投入，检查若不仔细，往往不知已经换了一台，但该台风机进口门是关闭的，起不到作用。所以应注意DAS轴加负压变化，巡检应注意轴加风机是否已调换及风机声音是否有异常（进口门关运行的风机有噪声），及时开启进口门。
| 阅读理解。 | |||||
| Amy's family has fun. They mail a diary (日记簿、日记) to each other. Everyone writes something in it. Amy's brother is open. He tells many things about his life. Amy's sister is Lazy. She doesn't write much. Amy's dad writes stories. Her mom is talkative. She writes a lot. Everyone enjoys the diary. | |||||
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| 1. Where do Amy's family members write their diaries? | |||||
| A. On the same family diary. B. On their own diaries. C. On Amy's diary. D. On Mother's diary. | |||||
| 2. When did Amy design a new dress? | |||||
| A. On Monday. B. On Tuesday. C. Yesterday. D. Today. | |||||
| 3. What does the brother think of his job? | |||||
| A. The job makes him sad. B. The job always gives him pleasure. C. The job is too easy. D. The job is a challenge. | |||||
| 4. What did the mother do today? | |||||
| A. She made a chocolate cake. B. She did nothing but walk in the park. C. She got a new job. D. She went for a walk and visited Aunt Betty. | |||||
| 5. What's the best title for the passage? | |||||
| A. Amy and her family. B. Amy and her diary. C. A family's diary. D. Amy's father writes stories. |
