【判断题】【消耗次数:1】
换向阀按操作方式可分为:手动换向阀、机动换向阀、电磁动换向阀、液动换向阀、电液动换向阀等。该说法( )
正确
错误
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相关题目
【判断题】 气动换向阀按其控制方式不同可以分为电磁换向阀、气动换向阀、机动换向阀和手动换向阀。该说法( )
①  正确
②  错误
【单选题】 换向阀按换向阀所控制的通路数不同可分为:二通换向阀、三通换向阀、四通换向阀、五通换向阀。该说法( )
①  正确
②  错误
【判断题】 电液比例换向阀一般由电液比例减压阀和液动换向阀组合而成。该说法( )
①  正确
②  错误
【判断题】 气动换向阀与液压换向阀相似。该说法( )
①  正确
②  错误
【判断题】 电液动换向阀是由电磁阀和液动阀组合而成。
①  正确
②  错误
【单选题】 换向阀按阀芯相对于阀体的运动方式可分为( )
①  控制阀
②  双控制阀
③  滑阀
【单选题】 气动换向阀按其作用特点可以分为单向型控制阀和换向型控制阀。该说法( )
①  正确
②  错误
【单选题】 截止式换向阀额特点是( )
①  阀芯的行程长
②  截止式阀一般采用软质材料密封,密封性能好,泄露量小
③  抗粉尘及污染能力差,对过滤精度要求高
【单选题】 液压系统中换向阀性能的主要要求是( )
①  油液流经换向阀时压力损失小
②  互不相通的油口间的泄露要小
③  以上表述全正确
④  换向要平稳、迅速且可靠
【单选题】 常用的电磁换向阀用于控制油液的( )。
①  流量
②  压力
③  方向
④  温度
随机题目
【单选题】 A: ________________?B: Im here for my cousins wedding.
①  Whats the way of your visit?
②  Whats the plan of your visit?
③  Whats the purpose of your visit?
④  Where will you live?
【单选题】 What is the correct serving order of western dishes?
①  appetizer, soup, side dishes, main course, dessert, coffee/tea.
②  soup, appetizer, dessert, side dishes, main course, coffee/tea.
③  side dishes, appetizer, soup, main course, dessert, coffee/tea.
④  dessert, coffee/tea, side dishes, appetizer, soup, main course.
【单选题】 A:Whatdoyouwant?B:IthinkIllhaveapieceofapplepie.A:___________B:Coffeewouldbefine.
①  Anything else?
②  What would you like to drink?
③  Would you like a cup of tea?
④  How about coffee?
【单选题】 The trees must ________ three times a week.
①  water
②  watering
③  be watered
④  waters
【单选题】 ________you need to be able to concentrate.
①  At work
②  Work
③  Working
④  Worked
【单选题】 It is _____ to rain.
①  likely
②  liked
③  may be
④  like
【单选题】 They held a great party to ____their victory.
①  experience
②  celebrate
③  praise
④  respect
【单选题】 The __________ feelings are good for health.
①  negative
②  positive
③  special
④  specific
【单选题】 Like Christmas,Chinese Spring Festival is also a festival for family___________.
①  reunion
②  event
③  surprise
④  meeting
【单选题】 — _________________________— Thanks! Its very kind of you to invite me.
①  How are you?
②  Happy Mid-Autumn Festival!
③  Do you like this festival?
④  Would you like something to have?