问题
问答题 简答题
电动葫芦启动后电机不转，不能提升重物的原因及处理方法是什么？
答案
参考答案：
原因：①过度超载
②电压比额定电压低10%以上
③电器故障
④制动轮与后盖锈蚀咬死，脱不开
⑤电机扫膛。
处理：①降低工负载至允许范围
②恢复电压
③检修电器与线路
④对制动轮清洗除锈⑤拆下修理，使定、转子间隙均匀。
搜题请搜索小程序“爱下问搜题”
电动葫芦启动后电机不转，不能提升重物的原因及处理方法是什么？
参考答案：
原因：①过度超载
②电压比额定电压低10%以上
③电器故障
④制动轮与后盖锈蚀咬死，脱不开
⑤电机扫膛。
处理：①降低工负载至允许范围
②恢复电压
③检修电器与线路
④对制动轮清洗除锈⑤拆下修理，使定、转子间隙均匀。
| 阅读理解。 |
| Early rising is helpful in more than one way. First, it helps us to have good health. We all need fresh air. It makes our health better to take morning exercises. The air is never so fresh as early in the morning. Early rising helps us in our studies. In the morning we learn more quickly and find it easy to learn something by heart. Early rising makes people able to plan the work for the day. We can't work well without a good plan. Just as the plan for the year should be made in the spring, the plan for a day should be made in the morning. Early rising gives us enough time to get ready for our work, such as to wash our hands and eat our breakfast. So the popular saying says, "Early to bed and early to rise makes a man healthy, wealthy (富有的) and wise." |
| 1. What does "early rising" mean? It means _____ early in the morning. |
[ ] |
| A. waking up B. getting up C. having breakfast D. making a day's plan |
| 2. Why does the passage advise us to take exercises early in the morning? |
[ ] |
| A. Because we can save much time. B. Because we are not busy in the morning. C. Because air in the morning is very fresh. D. Because we don't need to prepare for breakfast. |
| 3. We can work well with _____. |
[ ] |
| A. enough time B. a good reading C. clean hands D. a good plan |