问题
问答题 简答题
电梯限速器调整要求有哪些?
答案
参考答案:
(1)限速器动作灵活可靠,润滑良好,每周加油一次,每年清洗一次。
(2)张紧装置工作正常,绳索每分芰拉力不小于150N。
(3)限速器应在轿厢下降速度超过规定时即起作用,带动安全钳,使轿厢卡在导轨上。
(4)绳索至导轨距离偏差不超过±5mm。
电梯限速器调整要求有哪些?
参考答案:
(1)限速器动作灵活可靠,润滑良好,每周加油一次,每年清洗一次。
(2)张紧装置工作正常,绳索每分芰拉力不小于150N。
(3)限速器应在轿厢下降速度超过规定时即起作用,带动安全钳,使轿厢卡在导轨上。
(4)绳索至导轨距离偏差不超过±5mm。
King's College Summer School King's College Summer School is an annual(每年的) training program for high school students at all levels who want to improve their English. Courses are given by the teachers of King's College and other colleges in New York. Trips to museums and culture centers are also organized. This year's summer school will be from July 25 to August 15. More information is as follows:
1. You can most probably read the text in ________. A. a newspaper B. a travel guide C. a textbook D. a telephone book 2. Which of the following is true about King' s College Summer School? A. Only top students can take part in the program. B. King' s College Summer School is run every other year. C. Visits to museums and culture centers are part of the program. D. Only the teachers of King' s College give courses. 3. If you are to live with your relatives in New York, you will have to pay the school __ A. $200 B. $400 C. $500 D. $900 4. What information can you get from the text? A. The program will last two months. B. You can write to Thompson only in English. C. As a Chinese student, you can send your application on July 14, 2008. D. You can get in touch with the school by e-mail or by telephone |