【判断题】
(32393)发电车康明斯柴油机在运行中,油底壳一旦进水,应立即卸载停机,关闭该机进水阀,同时启用其他机组供电。(1.0分)
A. 对
B. 错
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相关试题
【判断题】
(32394)发电车柴油机与发电机安装时,如果同轴度不在一条直线上,机组运行时会产生异常振动。(1.0分)
A. 对
B. 错
【判断题】
(32395)发电车柴油机与发电机联结时,一般先固定发电机,再调整柴油机。(1.0分)
A. 对
B. 错
【判断题】
(32396)冬季发电车运行在严寒地区,如果柴油牌号与外温不匹配,下油箱柴油可能凝结成蜡状,严重地危及发电车正常发电。(1.0分)
A. 对
B. 错
【判断题】
(32397)冬季发电车运行在严寒地区,柴油析蜡,柴油机燃烧不充分,功率下降,甚至带不起负载。(1.0分)
A. 对
B. 错
【判断题】
(32398)发电车主空气断路器电动不能合闸时,可采用手动临时应急合闸。(1.0分)
A. 对
B. 错
【判断题】
(32399)热继电器的双金属片加热方式有三种,其中直接加热式应用最普遍。(1.0分)
A. 对
B. 错
【判断题】
(32400)目前所有康明斯发电车的冷却风机自动位时均为85℃启动,65℃停止。(1.0分)
A. 对
B. 错
【判断题】
(32401)当DW914主开关已合闸时,扳动其上的操纵手柄可以将主开关分闸。(1.0分)
A. 对
B. 错
【判断题】
(32402)发电车运行中,燃油供给管路出现轻度堵塞会造成柴油机游车,重度堵塞会造成柴油机停机。(1.0分)
A. 对
B. 错
【判断题】
(32403)发电车运行中,若出现上油箱至燃油滤清器管路堵塞,将随车应急软管从上油箱油阀直接接在燃油滤清器进油口位置。(1.0分)
A. 对
B. 错
【判断题】
(32404)冬季外温很低时,发电车运行中出现下油箱燃油析蜡,如果电动燃油泵抽不上油,应该立即改用手动泵抽油。(1.0分)
A. 对
B. 错
【判断题】
(32405)发电车燃油泵前面的油路系统漏空气、管路堵塞都有可能使燃油泵抽不上油。(1.0分)
A. 对
B. 错
【判断题】
(32406)发电车下油箱加满油后出现溢油,配电屏的报警装置立刻报警。(1.0分)
A. 对
B. 错
【判断题】
(32407)发电车上油箱如果泵油过满,会出现报警。(1.0分)
A. 对
B. 错
【判断题】
(32408)发电车柴油机的冷却水是柴油机正常工作必不可少的冷却介质,所以对膨胀水箱设置了低水位和高水位报警。(1.0分)
A. 对
B. 错
【判断题】
(32409)发电车上油箱是保证所有柴油发电机组正常工作十分重要的组件,所以上油箱设置了低油位和高油位报警。(1.0分)
A. 对
B. 错
【判断题】
(32410)发电车的电加热器管电源电压全部采用380V。(1.0分)
A. 对
B. 错
【判断题】
(32411)发电车的电加热器是通过接触器控制其接通和断开的。(1.0分)
A. 对
B. 错
【判断题】
(32412)发电车运行中,下油箱连通管路渗漏,可以通过外表涂密封胶防止渗漏。(1.0分)
A. 对
B. 错
【判断题】
(32413)发电车运行中,下油箱连通管路渗漏,如不及时处理,渗漏处将会越来越大。(1.0分)
A. 对
B. 错
【判断题】
(32414)发电车的烟火报警器的探头只有两种,一种是感测火焰和温度的,另一种是感测烟雾的。(1.0分)
A. 对
B. 错
【判断题】
(32415)发电车的烟火报警器具有自检、火灾报警、故障报警、消音与复音、记录与显示火警发生时间、自动灭火、时间校准等功能。(1.0分)
A. 对
B. 错
【判断题】
(32416)继电器是根据输入信号的变化来接通或断开控制电路,其输入的信号必须是电信号。(1.0分)
A. 对
B. 错
【判断题】
(32417)发电车出现绕组温度高一定是出现了扫膛的机械故障。(1.0分)
A. 对
B. 错
【判断题】
(32418)发电车出现绕组温度高报警,柴油机会自动停机保护。(1.0分)
A. 对
B. 错
【判断题】
(32419)发电车柴油机启动时启动马达不转,一定是启动马达坏了,所以立即更换启动马达。(1.0分)
A. 对
B. 错
【判断题】
(32420)发电车康明斯柴油机启动时,如果发现24V启动电压降很大,柴油机因转速低没有达到怠速运转,应立即改用48V转换电源应急启机。(1.0分)
A. 对
B. 错
【判断题】
(32421)发电车控制屏上主发电机的电流表可以互换。(1.0分)
A. 对
B. 错
【判断题】
(32422)发电车控制屏上24V电流表必须先并联分流电阻,再接到24V电路里。(1.0分)
A. 对
B. 错
【判断题】
(32423)当发电车的输出电中,如果出现缺相,电机性负载一定不能正常工作。(1.0分)
A. 对
B. 错
【判断题】
(32424)发电车输出电中,如果出现缺相,在全列车的负载中,凡使用220V电源的负载,有的能正常工作,有的不能工作。(1.0分)
A. 对
B. 错
【判断题】
(32425)发电车更换主空气断路器时,必须先断电停机。(1.0分)
A. 对
B. 错
【判断题】
(32426)发电车主空气断路器上如果积尘,可使发电车主干线的绝缘值降低。(1.0分)
A. 对
B. 错
【判断题】
(32427)煤、石油、天然气是能量的来源,但,太阳、风、海潮不是能量的来源。(1.0分)
A. 对
B. 错
【判断题】
(32428)发电车柴油发电机组是创造能源的机器。(1.0分)
A. 对
B. 错
【判断题】
(32429)润滑脂受到外力时,只要一流动就会变软,但是一旦处于静止时就会变硬。(1.0分)
A. 对
B. 错
【判断题】
(32430)润滑脂有很弱的粘附性,在摩擦面上不易保持,其抗水、密封性和抗漏失性突出,可以用在密封性不良的摩擦表面上。(1.0分)
A. 对
B. 错
【判断题】
(32431)在规定的条件下加热,达到一定的流动性的温度是润滑脂的一个重要性能指标。(1.0分)
A. 对
B. 错
【判断题】
(32432)滴点是润滑脂稠度和软硬程度的衡量指标。(1.0分)
A. 对
B. 错
【单选题】
生产经营单位必须依法参加___,为从业人员缴纳保险费。[913000000]
A. 工伤社会保险
B. 养老保险
C. 医疗保险
D. 失业保险
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