问题
问答题 简答题
运行中的电动机发生哪些故障时,应立即停止运行?
答案
参考答案:
(1)发生人身事故;
(2)电动机冒烟着火,或电缆头冒烟爆炸;
(3)电动机安全运行受到威胁(如水灾、火灾等);
(4)电动机扫膛;
(5)电动机发生剧烈振动;
(6)冷却装置在电动机内大量漏水;
(7)转速急剧下降,并有鸣声;
(8)机械部分严重损坏。
运行中的电动机发生哪些故障时,应立即停止运行?
参考答案:
(1)发生人身事故;
(2)电动机冒烟着火,或电缆头冒烟爆炸;
(3)电动机安全运行受到威胁(如水灾、火灾等);
(4)电动机扫膛;
(5)电动机发生剧烈振动;
(6)冷却装置在电动机内大量漏水;
(7)转速急剧下降,并有鸣声;
(8)机械部分严重损坏。
短文填空。用下面方框中单词或词组的适当形式填如短文空格内,使短文意思正确、通顺 (每词限用一次)。 | |
all the cups on the table were 2______. Each of them took a cup and started 3______ their own tea, looking at the 4______ cups. The teacher said: "Do you notice your 5______? You are all looking at each other's tea cups and 6______ of you even envy (羡慕) the 7______ cups of others." Then he went on: "I put the different cups here on purpose! Life is like 8______ tea. You all have the same thing in your cups- tea. And yet you can't 9______ enjoy it in your envy of another's cup. You forget 10______ your own life when you envy someone else's life. So now, taste your own tea! Does it matter from which cup it comes from?" |