【简答题】接触器的主触点用于接通或分断所控制的_____,一般只有_____触点。其辅助触点用于____电路中,常有两对常开和常闭触点,起电气联锁作用,故又称联锁(自保或互锁)触点。
【简答题】I know it is wrong to envy your children. But when I see my son, Tonio and his younger brother Sam going down a slide together, one’s arm around the other, I know I have missed something wonderful. No...
【简答题】阅读理解。 When I was ten, my mother worked all day so I had to take care of my younger brother. At that time my little brother was about four years old and he missed mum all the time. One day, after I had...
【单选题】While I was in the foreign country, my younger brother always ____ me of what was happening in big cities in time.
【简答题】常开主触点用于通断 ______________ ,常开辅助触点用于通断 ______________ 。
【判断题】液力偶合器主要部件是涡轮,从动件是泵轮。
【简答题】When I was ten, my mother worked all day so I had to take care of my younger brother. At that time my little brother was about four years old and he missed mum all the time. One day, after I had given...
【单选题】My younger brother couldn't work out the answer and ______. [ ]
【多选题】在我外出开会期间,班上有个少先队员和一个非队员打架。我回校后班上学生告诉了我,并说已经处理过了。也许我们往往会把它轻易地放过去,但是我想到一个教师应该了解一下学生们是怎样处理的,从中或许能够抓住孩子们身上的智慧和发光点。
打架事情发生的当天下午,少先队中队长让打了人的少先队员留下来,在干部扩大会上作检讨。这个同学开始时很抵触,心想检讨就检讨。开会了,中队长让他根据中队队委的决议唱一首《红领巾飘在...
【判断题】交流接触器主触点用于通断电流较大的主电路,由接触面积较大的常开触点组成,一般有三对。