【判断题】【消耗次数:1】
低压开关的作用是在系统低压管路中压力过低时,切断压缩机电磁离合器的电路
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相关题目
【判断题】 低压开关的作用是在系统低压管路中压力过低时,切断压缩机电磁离合器的电路。()
①  正确
②  错误
【单选题】 如果低压开关断开,导致压缩机电磁离合器断电,原因可能是( )。
①  制冷剂过量
②  制冷剂严重不足
③  鼓风机不转
【单选题】 如果压缩机电磁离合器不工作,可能的原因是( )。
①  环境温度过高
②  膨胀阀结冰
③  制冷剂严重缺乏
【单选题】 低压断路器按下( )“分”按钮时切断电路。
①  黄色
②  红色
③  绿色
【单选题】 联轴器与离合器的主要作用是()
①  缓冲、减振
②  传递运动和转矩
③  防止机器发生过载
④  补偿两轴的不同心或热膨胀
【判断题】 离合器接合和分离时,压紧弹簧都处于压缩状态。( )
①  正确
②  错误
【单选题】 气体在离心式压缩机扩压器中压力将( )。
①  降低
②  升高
③  压力不变
④  速度升高,压力降低
【单选题】 低压断路器按下( )“合”按钮时接通电路。
①  黄色
②  红色
③  绿色
【单选题】 DZ5-20型低压断路器的欠压脱扣器的作用是____。
①  过载保护
②  欠压保护
③  失压保护
④  短路保护
【单选题】 离合器的典型类型( )
①  摩擦离合器
②  牙嵌离合器
③  以上为正确答案
随机题目
【单选题】 “Are you ready for your paper?” “Not yet. I need___ to read through it.”
①  other three minutes
②  another three minutes
③  three other minutes
④  more three minutes
【单选题】 ____ to speak when the audience interrupted him.
①  Hardly had he begun
②  No sooner had he begun
③  Not until began
④  Scarcely did he begin
【单选题】 13. When I was a teenager, my bedroom was always ____; as an adult, though, my room is always neat..
①  tidy
②  orderly
③  mess
④  untidy
【单选题】 Women have to be more ____ than men if they want to get anywhere in the business world.
①  difficult
②  ambitious
③  traditional
④  conservative
【单选题】 24. The kind-hearted woman always tries to help others, but recently she has been ____kind and generous.
①  chiefly
②  specially
③  principally
④  especially
【单选题】 When the passenger woke up, he found himself ____in a hospital ward.
①  lie
②  lay
③  lying
④  lain
【单选题】 Never get off the bus ____it has stopped.
①  if
②  as soon as
③  until
④  or
【单选题】 He should get used by now ____ Chinese food.?
①  to eating ?
②  to eat ?
③  for eating ?
④  eatin?
【单选题】 2. As time went on, he found himself ____ with the toughest job she had ever taken.
①  face
②  faced
③  facing
④  to face
【单选题】 He came to the meeting ____ his serious illness.
①  inspite of
②  in spite
③  despite of
④  despite