问题
问答题 简答题
电测量指示仪表的测量机构必须具备哪几个基本功能？
答案
参考答案：
（1）在被测量作用下，能产生使仪表可动部分偏转的转动力矩。
（2）可动部分偏转时，能产生随偏转角增大而增加的反作用力矩。
（3）可动部分运行时，能产生阻尼力矩。
（4）可动部分有可靠的支承装置。
（5）能直接指示出被测量的大小。
搜题请搜索小程序“爱下问搜题”
电测量指示仪表的测量机构必须具备哪几个基本功能？
参考答案：
（1）在被测量作用下，能产生使仪表可动部分偏转的转动力矩。
（2）可动部分偏转时，能产生随偏转角增大而增加的反作用力矩。
（3）可动部分运行时，能产生阻尼力矩。
（4）可动部分有可靠的支承装置。
（5）能直接指示出被测量的大小。
The other day, I happened to meet someone I hadn’t seen for many years. I couldn’t believe the change in him. In fact, he didn’t even seem like the 36 person. When I first knew Bill , back in 37 , he was one of the most carefree（无忧无虑）people I had ever 38 . He was always ready to have a party. He thought 39 of going out for beer at three o’clock in the morning or driving 15 miles to see an old 40 he really liked. Bill and I were in the same class in college, and 41 was never dull when he was 42 . With him there was one wild 43 after another. Sometimes I wonder how we 44 to study for our exams. Last week I was in Houston on business and I ran into Bill in the bar at the hotel. 45 , I wasn’t even sure it was 46 . Was this short-haired businessman really the same person? I wasn’t really sure until I came near him but it indeed was Bill. Now he works for a bank. He 47 most of the evening about his job, his new car and his house. How he had changed! Back when we were in college, the 48 thing Bill cared about were possessions(财富). Now they seemed to be his main 49 . Although I have changed quite a bit myself, somehow I never 50 Bill changing so much. My image of him 51 the one I had formed 52 the time when we were college students together. I suppose it’s 53 to expect people to remain the same, especially 54 I have changed so much myself. But I must say that I enjoyed the old Bill much more than the new Bill. Maybe he 55 the same way about me.
|