问题
问答题 论述题
10KV电力线路断线原因分析。
答案
参考答案：
（1）大风或砍伤树木造成的树害。
（2）车辆等外力撞击造成的倒杆。
（3）因风压、覆冰等造成导线负荷力超过其允许的最大承受能力。
（4）相间短路、单相接地、雷击等引发电弧烧断导线。
（5）因施工或维修时质量低劣不符规定要求。
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10KV电力线路断线原因分析。
参考答案：
（1）大风或砍伤树木造成的树害。
（2）车辆等外力撞击造成的倒杆。
（3）因风压、覆冰等造成导线负荷力超过其允许的最大承受能力。
（4）相间短路、单相接地、雷击等引发电弧烧断导线。
（5）因施工或维修时质量低劣不符规定要求。
| 完形填空。 David is 8. One day his friend Rose __1__ to him, "This Sunday is my birthday. Do you want __2__ to my birthday party?" David says, "Yes." On Sunday, David asks his mother if he can go to the party. His mother says, "Yes, you can go, but you __3__ be polite. Don't __4__ for any food. Someone will give you __5__." "All right, Mum." David answers and he goes to Rose's house __6__ his bike. There are __7__ children at the party. They play together, and then Rose's mother gives them some food. But she forgets David. He __8__ for some time, and then he takes his __9__ to her and says, "Do you want a nice _10__ plate?" | ||||
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