【单选题】
安全电压指正确人体不会引起生命危险的电压。( ) ___
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相关试题
【单选题】
当发生跨步电压达到40V以上时,人体将有触电的危险。( ) ___
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因接触网支柱不带电,所以作业人员可以在支柱旁休息。() ___
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乘务(作业)人员发现接触网上挂有线头或导线折断下垂搭在车辆上时,应立即处理。() ___
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为保证人身安全,任何人携带的物件与接触网设备的带电部分需保持2米以上的距离。() ___
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汽车通过电气化铁路平交道口时,货物的装载的高度(从地面算起)不得超过3米。() ___
【单选题】
手执金属棒、导线、木杆、梯子、旗杆等工具或物件通过接触网时,可以高举通过。() ___
【单选题】
电气化区段,在接触网未停电、未接地前,任何人禁止到各种车辆的车顶上进行作业。() ___
【单选题】
用水和灭火器浇灭距离接触网带电部分不足8米的燃着物时,接触网必须停电。() ___
【单选题】
因工作需要,任何人都可以操作隔离开关。() ___
【单选题】
在高压触电现场发现有人触电时,应立即用手将触电人员拖离触电现场。() ___
【单选题】
在修建靠近接触网的房屋、建筑及设备时,严禁借助支柱搭脚手架或在铁塔支柱上上下下。() ___
【单选题】
隔离开关支撑绝缘子应清洁,无破损和放电痕迹,釉面剥落面积不大于300mm。() ___
【单选题】
开关引线与隔离开关连接牢固,接触良好,距接地部份不小于400mm,拉力不大于60kg。() ___
【单选题】
允许带负荷进行隔离开关的倒闸作业。() ___
【单选题】
遇有危及人身或设备安全的紧急情况,可不经调度批准,先行断开有条件断开的隔离开关,并立即报告调度,但再闭合时必须有调度的命令。() ___
【单选题】
当发现隔离开关及其传动装置状态不良时,值班员应立即要求电力调度派人检修,在修好之前允许偶尔操作。() ___
【单选题】
倒闸开关不能带负荷进行分合闸。() ___
【单选题】
隔离开关按使用情况分类:分为经常操作的隔离开关和不经常使用的隔离开关。() ___
【单选题】
防护用品在每次使用前后,用干布擦净,使用前要进行简略漏气试验。如发现有裂损等异状时,要及时要求电力调度派人来检查处理。() ___
【单选题】
各隔离开关的传动机构必须锁住,钥匙存放固定地点,专人保管并有标鉴注明开关号。() ___
【单选题】
当发现隔离开关及其传动装置状态不良时,值班员应立即要求电力调度派人检修,在修好之前不得进行操作,并严禁擅自攀登支柱自行修理。() ___
【单选题】
遇有危及人身或设备安全的紧急情况,可不经调度批准,先行断开有条件断开的隔离开关。() ___
【单选题】
相邻支柱上的隔离开关及每一根支柱上的各台隔离开关,其钥匙可以互相通用。() ___
【单选题】
动车组一级修作业程序不用进行登顶作业。() ___
【单选题】
单组动车组一架受电弓隔离时,严禁进入自动洗车作业区。() ___
【多选题】
铁路常见的事故类别有( )类。 ___
A. 物体打击
B. 车辆伤害
C. 机械伤害
D. 起重伤害,触电,高处坠落
【多选题】
在线路上作业,随时注意( )的机车车辆,严禁( )接打手机,或者( )或者做其他( )的与岗位工作无关的事情。 ___
A. 邻线来往
B. 接打手机
C. 发,看信息
D. 有碍望,视听和分散精力
【多选题】
天窗(或封锁)时间以外,禁止任何人员进入高速铁路运行区段防护栅栏,桥面或隧道内。必须进入时,须得到( ),办理登记销点手续,从( )进出,并严格执行工作门管理制度。 ___
A. 调度命令准许
B. 上级领导准许
C. 防护栅栏空漏处
D. 工作门
【多选题】
严禁在( )和站台坐,立,闲谈,休息,避雨或乘凉。 ___
A. 枕木头
B. 轨道心
C. 车底下
D. 车端部
【多选题】
两人以上扛抬物品时应( ),做好呼唤应答。 ___
【多选题】
以下哪些是危险有害因素。( ) ___
A. 可对人造成伤亡或影响人的健康甚至导致疾病的因素
B. 能对人造成伤亡或对物造成突发性损失的因素
C. 能影响人的健康因素
D. 导致疾病或对物造成慢性损害的因素
【多选题】
机动车出入厂门,车间,库房限速( )。厂内行驶限速( ), ___
A. 5km/h
B. 10km/h
C. 20km/h
【多选题】
操作接触网隔离开关有哪些规定。( ) ___
A. 须经过培训并取得安全操作证
B. 必须执行一人操作一人监护制度
C. 必须按规定穿戴号绝缘鞋何绝缘手套
D. 遇雷雨天气时,禁止操作隔离开关
【多选题】
在起重过程中,起重物尚未垫妥架稳前,操纵人员( ),身体任何部位( )。 ___
A. 不得离开岗位
B. 可以离开岗位
C. 不得伸入起重物下方
D. 可以伸入起重物下方
【多选题】
危险场所,地段和重要设施,设备处所,必须设置醒目的( )或设置( )。 ___
A. 警戒防护带
B. 安全警示标志
C. 安全防护隔离区
D. 安全通道
【多选题】
以下哪些属于有限空间。( ) ___
A. 污水处理沉淀池
B. 井
C. 地下油库阀井
D. 储罐
【多选题】
作业前须对有限空间作业现场指定专人负责检测( )等。 ___ A、 含湿量 B、 氧浓度 C、 易燃易爆气体浓度 D、 有毒有害物质265 铁路常见的事故类别有( )类。 (ABCD)
A. 物体打击
B. 车辆伤害
C. 机械伤害
D. 起重伤害,触电,高处坠落
【多选题】
在线路上作业,随时注意( )的机车车辆,严禁( )接打手机,或者( )或者做其他( )的与岗位工作无关的事情。 ___
A. 邻线来往
B. 接打手机
C. 发,看信息
D. 有碍望,视听和分散精力
【多选题】
动车组检修作业时,登顶检查必须领取( ),并要求( )。顶上行走时,要求作业人员( ),行走时走在车顶( )。 ___
A. 门禁卡
B. 一人一卡
C. 穿戴绝缘防滑鞋
D. 防滑带
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I fell and hurt myself while I ________ basketball yesterday.___
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The top of the Great Wall is ________ for five horses to go side by side.___
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Nancy is considered to be _________ the other students in her class.___
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【单选题】
She is not only my classmate __________ also my good friend.___
A. or
B. but
C. and
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I would like to do the job ________ you don't force me to study.___
A. in case
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C. though
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__________ she survived the accident is miracle.___
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I often see _________ the road on his way home.___
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The grey building is the place where the workers live, and the white building is the place where the spare parts _________ .___
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Once environmental damage ___________, it takes many years for the system to recover.___
A. is to do
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We worked hard and completed the task ________.___
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I didn't expect you to turn __________ at the meeting yesterday.___
A. up
B. to
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Mike is better than Peter _________ swimming.___
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Eggs, though rich in nourishments, have ___________ of fat.___
A. a large number
B. the large number
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【单选题】
His salary as a driver is much higher than _____________.___
A. a porter
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I have been looking forward to__________ from my parents.___
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__________ her and then try to copy what she does.___
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— I think John and Peter will.___
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