【单选题】
(32799)康明斯KTA-19G2柴油机中,机油旁通滤清器是( )。(1.0分)___
A. LF670
B. LF777
C. WF2054
D. FF105
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答案
B
解析
暂无解析
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【单选题】
(32800)康明斯KTA-19G2柴油机中,冷却水滤清器是( )。(1.0分)___
A. LF670
B. LF777
C. WF2054
D. FF105
【单选题】
(32801)拆卸发电车蓄电池,宜( )。(1.0分)___
A. 先拆负极接线,后拆正极接线
B. 先拆正极接线,后拆负极接线
C. 正负极接线同时拆卸
D. 先拆正极或负极接线均可
【单选题】
(32802)蓄电池正负极性标识颜色分别涂打为( )。(1.0分)___
A. 红色、白色
B. 白色、红色
C. 红色、黑色
D. 黑色、红色
【单选题】
(32803)蓄电池的内阻主要包括( )的电阻和电解液的电阻等。(1.0分)___
A. 导线
B. 极板
C. 接线柱
D. 作用物质
【单选题】
(32804)电容器安装时,三相电容量的差值应调配到最小,其最大与最小的差值不应超过平均值的( )。(1.0分)___
A. 5%
B. 8%
C. 10%
D. 15%
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(32805)热继电器是( )元件。(1.0分)___
A. 短路保护
B. 弱磁保护
C. 过载保护
D. 极限保护
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(32806)康明斯发电车中,当柴油机转速高于( )时,将发生超速停机报警保护。(1.0分)___
A. 1500r/min
B. 1725r/min
C. 1800r/min
D. 2000r/min
【单选题】
(32807)关于柴油机发生“游车”的各种原因中不正确的是( )。(1.0分)___
A. 调速器反馈系统故障
B. 油中有空气
C. 调速器输出轴和油泵齿条连接不当
D. 油量调节杆松动
【单选题】
(32808)柴油机润滑系统中的机油呈灰白混浊时,说明机油中混有( )。(1.0分)___
A. 柴油
B. 水
C. 气泡
D. 都不是
【单选题】
(32809)康明斯发电车所使用的1FC5356发电机定子绕组高温报警温度为( )。(1.0分)___
A. 150℃
B. 155℃
C. 200℃
D. 85℃
【单选题】
(32810)康明斯发电车中,交流燃油泵电路中的热保护继电器的整定值为( )。 (1.0分)___
A. 2.5A
B. 3A
C. 3.5A
D. 4A
【单选题】
(32811)康明斯发电车中燃油泵是利用( )电源工作的。(1.0分)___
A. DC24V
B. DC48V
C. 本车用电
D. I、II路干线
【单选题】
(32812)康明斯发电车中,当柴油机水温高于( )时,将发生高水温报警。(1.0分)___
A. 85℃
B. 90℃
C. 95℃
D. 100℃
【单选题】
(32813)康明斯KTA-19G2柴油机中高水温停机报警传感器的接线有( )。(1.0分)___
A. 1根
B. 2根
C. 3根
D. 4根
【单选题】
(32814)柴油机运行中出现转速不稳时,不正确的处理方法是( )。(1.0分)___
A. 更换频率表
B. 检查柴油机的进气通路,清除可能的堵塞
C. 检查柴油机燃油管路,清除可能的堵塞
D. 检查柴油机调速板,发现不良,调试或更换
【单选题】
(32815)柴油机运行时,燃油管路出现堵塞造成转速不稳,正确的处理方法是( )。(1.0分)___
A. 减少柴油发电机的输出负载
B. 微调柴油机转速
C. 停机,清洗油路或更换燃油滤清器
D. 调低输出电压
【单选题】
(32816)不可能造成柴油机燃油管路堵塞情况是( )。(1.0分)___
A. 燃油标号不对,冬天燃油起腊
B. 上油箱油位低而出现的油压不足
C. 油阀坏
D. 燃油滤清器脏
【单选题】
(32817)发电车里不属于柴油发电机组辅助装置的是( )。(1.0分)___
A. 燃油供给装置
B. 冷却装置
C. 燃油炉
D. 启动装置
【单选题】
(32818)提速发电车的高最运行速度为( )km/h(1.0分)___
A. 120
B. 130
C. 150
D. 160
【单选题】
(32819)发电车分为分散冷却式和集中冷却式,主要指的是按( )。(1.0分)___
A. 发电机的冷却方式
B. 机房的冷却方式
C. 柴油机冷却水的换热装置的安装形式
D. 柴油发电机组的冷却方式
【单选题】
(32820)青藏客车运行在高海拔地区,空气稀薄,因而对发电车的柴油机结构有严格的要求,装有2台( )kW机组。(1.0分)___
A. 300
B. 500
C. 800
D. 900
【单选题】
(32821)进入青藏线的客车发电车,其输出电压是( )。(1.0分)___
A. AC380V
B. DC400V
C. AC400V/230V
D. DC600V
【单选题】
(32822)柴油发电机组由( )组成。(1.0分)___
A. 柴油机及附属装置
B. 发电机及附属装置
C. 柴油机和发电机
D. 柴油机、发电机、配电控制屏
【单选题】
(32823)发电车的柴油机与发电机连接方式是( )。(1.0分)___
A. 联轴器式
B. 钢性连接片式
C. 离合器式
D. 联轴器式或钢性连接片式
【单选题】
(32824)发电车的柴油发电机组的供电制式是( )。(1.0分)___
A. AC380V
B. DC600
C. AC220V
D. AC400V/230V
【单选题】
(32825)发电车的柴油发电机组的单机容量有( )。(1.0分)___
A. 200kW、300kW
B. 300kW、480kW
C. 200kW、300kW、480kW、800kW
D. 300kW、480kW
【单选题】
(32826)发电车的柴油机的热效率一般为( )。(1.0分)___
A. 10%左右
B. 30%-46%
C. 20%-30%
D. 70%-80%
【单选题】
(32827)柴油机的转速一般规定为( )。(1.0分)___
A. 1100r/min以上的为高速柴油机
B. 1500r/min
【单选题】
(32828)发电车柴油发电机组的同步发电机的励磁方式是( )。(1.0分)___
A. 旋转电枢式
B. 旋转磁极式
C. 旋转电枢式和旋转磁极式
D. 旋转转子式
【单选题】
(32829)柴油发电机组按照性质和用途分为( )。(1.0分)___
A. 常用发电机组和备用发电机组
B. 常用发电机组和应急发电机组
C. 备用发电机组和应急发电机组
D. 常用发电机组、备用发电机组、应急发电机组
【单选题】
(32830)柴油发电机组的A类工作条件是指( )。(1.0分)___
A. 海拔高度1000m、环境温度40℃、相对湿度60%
B. 海拔高度1500m、环境温度40℃、相对湿度60%
C. 海拔高度1000m、环境温度10℃、相对湿度60%
D. 海拔高度1000m、环境温度20℃、相对湿度80%
【单选题】
(32831)柴油发电机组的B类工作条件是指( )。(1.0分)___
A. 海拔高度0m、环境温度20℃、相对湿度60%
B. 海拔高度900m、环境温度20℃、相对湿度60%
C. 海拔高度0m、环境温度45℃、相对湿度60%
D. 海拔高度0m、环境温度20℃、相对湿度20%
【单选题】
(32832)青藏线上运行的发电车的柴油发电机组的工作的环境温度是( )。(1.0分)___
A. +10℃~-10℃
B. +20℃~-20℃
C. +30℃~-30℃
D. +40℃~-40℃
【单选题】
(32833)发电车乘务员的出乘报到指的是( )。(1.0分)___
A. 随时到值班室与值班员打个招呼可表示报到
B. 由乘务长代替到值班室签到
C. 在规定的时间内,打个电话给值班员表示报到
D. 按规定的时间到指定地点签到,并带好出乘用品
【单选题】
(32834)发电车乘务员接班,下列做法错误的是( )。(1.0分)___
A. 与回乘发电车乘务员一起参加交接会议
B. 到发电车上检查机组状态
C. 与回乘务员当面办理交接,并在规定的台账上签字
D. 与回乘发电车乘务员电话交接,再上车检查发电车状态
【单选题】
(32835)发电车乘务员出乘报到后,不正确的做法是( )。(1.0分)___
A. 迅速到达发电车,检查发电车各部启机前的状态
B. 设置防护信号,检查发电车下油箱、电池箱、各水管油管等技术状态
C. 启机前检查机油、冷却水、上油箱油位、电池电压等
D. 办理好送电手续后,提前20分钟送电
【单选题】
(32836)发电车乘务员在库内加油时,必须确定所加燃油的( )合乎要求。(1.0分)___
A. 油密度、油颜色
B. 油重量、油气味
C. 油质、油标号、油位
D. 油燃点、油标号
【单选题】
(32837)始发前,对发电车下油箱检查标准,不正确的是( )。(1.0分)___
A. 油箱悬吊装置固定
B. 螺栓无松动,吊耳无裂纹
C. 油箱各部无渗漏
D. 两下油箱连通阀须关闭
【单选题】
(32838)发电车始发前对火灾报警器自检时,报警器正常的是( )。(1.0分)___
A. 按下故障自检键,故障灯不亮
B. 按下故障自检键,不响
C. 按下故障自检键,故障灯亮,且发出故障连续音
D. 报警时,按下消音键音响持续
【单选题】
(32839)有两位发电车乘务员的发电车始发前,正确的作业方法是( )。(1.0分)___
A. 一人启机供电,另一人到宿营车休息,等待接班
B. 两人均在配电室监视机组运行仪表
C. 两人都到车下,分边检查发电车下部配件,检查完后迅速上车
D. 一人在车上监视机组运行,另一人在车下检查发电车下部配件
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