【判断题】【消耗次数:1】
微机控制电子点火系的基本点火提前角是电子控制单元根据发动机的水温和转速确定的。()
正确
错误
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相关题目
【判断题】 基本点火提前角是发动机最主要的点火提前角
①  正确
②  错误
【简答题】 基本点火提前角是发动机[填空]最主要的点火提前角。
【判断题】 发动机点火提前角由基本点火提起前角和修正点火提前角组成。()
①  正确
②  错误
【单选题】 随着发动机转速的提高,点火提前角( )
①  减小;
②  增大;
③  不变;
④  二者无关联
【单选题】 采用电控点火系统时,发动机实际点火提前角与理想点火提前角关系为( )
①  大于
②  等于
③  小于
④  接近于
【判断题】 发动机转速增大时,点火提前角应增大。()
①  正确
②  错误
【判断题】 发动机负荷减小时,点火提前角应减小。()
①  正确
②  错误
【单选题】 普通电子控制点火系统由( )控制点火线圈的通断。
①  ECU
②  点火控制器
③  分电器.
④  转速信号
【单选题】 当发动机怠速工况下工作时,电控单元对点火提前角实行( ).
①  开环控制;
②  闭环控制;
③  温度高时开环控制、温度低时闭环控制
【单选题】 传统点火系与电子点火系统最大的区别是( )
①  点火能量的提高
②  断电器触点被点火控制器取代
③  曲轴位置传感器的应用
④  点火线圈的改进
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【单选题】 She_______ the door before she goes away.
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【单选题】 —We all had a lot of fun at the barbecue ?yesterday. Pity you weren’t there. —I really should have gone with ?you but I _______ on some remaining problems.
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【单选题】 When he was a boy,he used to go there and watch________.
①  to repair bicycles
②  bicycles to be repaired
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【单选题】 I didnt hear the phone. I________asleep.
①  must be
②  must have been
③  should be
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【单选题】 We are confident that relations between ?North Korea and South Korea _______ through further?? efforts to reduce the long-term hostile ?attitudes.
①  are being improved
②  will be ?improved
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【单选题】 Yourroomis______mine.
①  twice as large than
②  twicethesizeof
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【单选题】 The old farmer,________the badly injured and burnt soldier,came out of the burning farmhouse,calling continuously for help.
①  supporting
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【单选题】 They can’t leave until they _______ their work .
①  did
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③  have done
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【单选题】 As I will be away for at least a year,Id appreciate________from you now and then so that I can know how everyone is getting along.
①  having heard
②  to hear
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【单选题】 The dog,________,will be made a good watchdog.
①  to train properly
②  being trained properly
③  properly to train
④  trained properly