【判断题】
福田站联络开关:福13、福23依次是常闭和常开开关。
A. 对
B. 错
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答案
B
解析
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相关试题
【判断题】
安托山站联络开关:安13、安23依次是常闭和常开开关。
A. 对
B. 错
【判断题】
新秀站联络开关:新13、新23依次是常闭和常开开关。
A. 对
B. 错
【判断题】
所有接触网设备,自第一次受电开始即认为带电设备。
A. 对
B. 错
【判断题】
在进行接触网作业时,必须戴安全帽,穿工作服、绝缘鞋和荧光衣,高空作业必须系好安全带。
A. 对
B. 错
【判断题】
雷电时可视情况在露天接触网上进行作业。
A. 对
B. 错
【判断题】
接触网高空作业时工具、零部件和材料等不得抛掷传递,长大物料上下时有必要时使用绳索平吊。
A. 对
B. 错
【判断题】
施工负责人和推扶梯车(组合架)人员,要时刻注意和保持梯车(组合架)的稳定。曲线和大风天气作业时,应采取防止倾倒措施;在大坡道作业时必须采取防滑移措施。
A. 对
B. 错
【判断题】
梯车(组合架)放在道床、路肩上,或作业人员超出工作台范围作业时,作业人员要将安全带系在接触网上,必要时系在梯车(组合架)工作台框架上。
A. 对
B. 错
【判断题】
用梯子进行接触网作业时,作业人员要先检查梯子是否牢靠。梯子上可以有2人作业。作业人员上下梯子或在梯上作业时,梯脚要放稳固并设专人扶梯,严防滑移。
A. 对
B. 错
【判断题】
作业时应关好工作台的防护门;在工作台外作业时,必须系好安全带。
A. 对
B. 错
【判断题】
接触网带电时严禁登上作业车工作台。
A. 对
B. 错
【判断题】
作业车组移动过程中,工作台上人员可以站立,但要注意避让设备。
A. 对
B. 错
【判断题】
验电前只需对验电器(含引线)外观检查,并对验电器进行通路、报警功能测试。
A. 对
B. 错
【判断题】
报警功能测试:通路功能测试及现场验电前需按一下验电指示器的自检按钮,指示器发出间歇式声光指示信号,证明验电器完好,(放电棒使用及检查参照验电器)。
A. 对
B. 错
【判断题】
用验电器验电的顺序是:将验电器接地线分别与验电器及钢轨连接;然后将验电器端头轻靠接触网接地挂环,无响声则为已停电。
A. 对
B. 错
【判断题】
当验明接触网已停电后,须在已验电的接地挂环上接挂地线。
A. 对
B. 错
【判断题】
验电和装设、拆除接地线,必须由二人进行,一人操作一人监护。
A. 对
B. 错
【判断题】
作业中如遇有梯车(组合架)必须要经过地线时,该地线保护范围内,所有作业人员无须下梯车(组合架)停止检修作业即可,待梯车(组合架)通过后再按原位接挂地线。
A. 对
B. 错
【判断题】
隔离开关上网电缆及隔离开关刀闸检修作业时,需确认变电所内直流小车已拉到试验位及在静触头接地挂环处挂接地线。检修完毕后,检查确认隔离开关刀闸状态。
A. 对
B. 错
【判断题】
接触网:沿地铁线路上空架设,直接供给地铁列车电能的特殊输电线路。
A. 对
B. 错
【判断题】
汇流排:在接触网系统中用于夹持、固定接触线,承载和传输电能的铝排装置。
A. 对
B. 错
【判断题】
刚柔过渡装置:接触网由刚性悬挂形式过渡到柔性悬挂形式的转换装置。
A. 对
B. 错
【判断题】
支持和定位装置:用以悬挂汇流排(承力索)、接触线,保证接触线相对地面规定高度的支持和定位设备。
A. 对
B. 错
【判断题】
接触线:是接触悬挂中与受电弓直接接触、带有沟槽、传导电流的铜铝合金导线。
A. 对
B. 错
【判断题】
均流电缆:连接上下行牵引轨及两根钢轨之间的电缆。
A. 对
B. 错
【判断题】
回流电缆:连接牵引轨和变电所负极母排的电缆。
A. 对
B. 错
【判断题】
牵引轨:用来回流牵引电流的钢轨。
A. 对
B. 错
【判断题】
电分段:纵向或者横向将接触网从机械连接上互相分开的电气装置。
A. 对
B. 错
【判断题】
分段绝缘器:用以实现电气分段的专用绝缘装置。
A. 对
B. 错
【判断题】
限界门:为了保证车辆、行人及货物的安全,避免触电事故,在电气化铁道区段的道口设置的一种限高标志,用于限制货物、车辆和行人携带的杆件等的高度。
A. 对
B. 错
【判断题】
隔离开关:在接触网带负荷情况下切断或闭合供电回路,并有可靠断开点的电气设备。
A. 对
B. 错
【判断题】
除遇有危及人身或设备安全的紧急情况,电力调度发布的命令可以没有命令编号和批准时间外,接触网所有的作业命令,均必须有命令编号和批准时间。
A. 对
B. 错
【判断题】
在装设接地线前,需对接地线本体进行检查,接地线导体无严重的烧伤断股现象,绝缘操作杆绝缘良好;操作杆绝缘部分无污垢、损伤、裂纹;各连接点连接紧固无松动。
A. 对
B. 错
【判断题】
在装设接地线时,将接地线的一端先行接地,再将接地线夹紧固在已停电的接地挂环上。拆地线时,先拆钢轨端,再拆连接接触网端。接地线要连接牢固,接触良好。
A. 对
B. 错
【判断题】
接触网检修工作人员实行昼夜值班制度,每班设1名值班人员。
A. 对
B. 错
【判断题】
接触网工班值班人员要按时做好交接班工作。交班人员要向接班人员叙述设备运行情况及有关事项,接班人员认真阅读值班日志,掌握上一班的情况并在值班日志上签字确认后(接班工班不在同一车辆段时可以邮件发送《2号线接触网事务统计表》交接,需电话确认),交班人员方可下班。
A. 对
B. 错
【判断题】
工班长接班后要认真审阅值班日志及《2号线接触网事务统计表》,检查驻站值班人员到岗情况,确认工器具、备品备件、安全用具、抢修机具是否完备,并对组员进行抢修分工。
A. 对
B. 错
【判断题】
大修系维持性的修理,主要是对接触网设备进行检测、调整、维护;对磨损、锈蚀到期的接触线、汇流排及架空地线等进行整修、补强或局部更换,以保持接触网的正常工作状态。
A. 对
B. 错
【判断题】
鉴于接触网是动态设备,运行条件随时可能发生变化,在实际运行中,经调查研究、技术鉴定,从运行检修的实际出发,由运营总部批准后可以修改和调整小修的周期和范围,并对相关文本进行修改后执行。
A. 对
B. 错
【判断题】
停电作业:在接触网停电设备上进行的作业。
A. 对
B. 错
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【多选题】
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An administrator must reprovision 25 hosts with a new image profile that he has created. Which two methods can the administrator use to change the image profile? (Choose two.)___
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The vSphere administrator must change the path selection policy (PSP) to comply with best practices. Which two interfaces can be used to change the PSP? (Choose two.)___
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In what two ways can Storage DRS load balance virtual machines? (Choose two.)___
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What two reasons can explain why a host cannot be removed from a vSphere Distributed Switch? (Choose two.)___
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Which three requirements are true for the vCenter Server HA network? (Choose three.)___
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C. HA network IP addresses for all nodes can be on different subnets.
D. IP addresses must be on the same network as the management network.
E. A default gateway must be configured.
【多选题】
Which two statements correctly describe Normal Lockdown Mode? (Choose two.)___
A. ESXi Shell and SSH services are independent of lockdown mode.
B. In normal lockdown mode the DCUI service is stopped.
C. ESXi Shell and SSH services are dependent of lockdown mode and cannot be configured.
D. In normal lockdown mode the DCUI service is running.
【多选题】
The Health check feature in the vSphere Distributed Switch helps troubleshoot network connectivity. What three checks does this feature perform? (Choose three.)___
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D. VLAN
【多选题】
What are the three types of nodes in a vCenterServer HA cluster? (Choose three.)___
A. Master
B. Replica
C. Witness
D. Active
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【多选题】
What are two consequences of turning off vSphere DRS on a cluster? (Choose two.)___
A. vMotion capability will be lost.
B. Resource pools will be lost.
C. vApps will be lost.
D. Affinity rules will be lost.
【多选题】
Which two protocols can be used to back up vCenter Server Appliance Instance? (Choose two.)___
A. iSCSI
B. HTTPS
C. FTP
D. NFS
【多选题】
What are two requirements to enable EVC in a vSphere DRS cluster? (Choose two.)___
A. CPU must be in the same family and of the same speed.
B. CPUs must be from the same vendor.
C. EVC must use the lowest possible baseline supported by the hardware.
D. No VMs may be running in the cluster.