【单选题】
转换支柱用于接触网锚段关节的两锚柱之间，它支撑（），电动列车受电弓在此两柱间进行锚段转换。___
A. 两支工作支
B. 两支非工作支
C. 一支工作支、一支非工作支
D. 一支接触悬挂
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【单选题】
分段绝缘器中点偏离线路中心线不应大于（）。___
A. 30mm
B. 50mm
C. 100mm
D. 200mm
【单选题】
道岔柱同时承受两支接触悬挂及其支持装置的重力、两支接触悬挂的（）。___
A. 垂直负载
B. 水平力
C. 重力和水平力
D. 风负荷和水平力
【单选题】
下锚拉线与地平面夹角标准为（）。___
A. 45º
B. 60º
C. 90º
D. 180º
【单选题】
拉线基础下锚锚杆位置及方向正确，锚杆中心距锚柱的距离符合要求，施工偏差为（）。___
A. ±50mm
B. ±100mm
C. ±120mm
D. ）±200mm
【单选题】
预制拉线，一般采用（）实测拉线长度___
A. 钢尺
B. 皮尺
C. 卷尺
D. 以上都不对
【单选题】
在曲线地段，支柱应设置在曲线（）；缓和曲线上，支柱应设在线路外侧。___
A. 内侧
B. 外侧
C. 内侧或外侧
D. 以上都不对
【单选题】
支柱侧面限界是指轨面处（）与线路中心的距离。___
A. 支柱外侧
B. 支柱内侧
C. 支柱中心线
D. 支柱位置
【单选题】
为保证铁路沿线的建筑物不得影响各型电动列车和作业车通过规定的建筑物至临近（）的最小允许距离，这个距离称为建筑限界。___
A. 钢轨外侧
B. 接触网中心线
C. 线路中心线
D. 钢轨内侧
【单选题】
建筑接近限界的规定值要小于支柱的侧面限界的设计取值，一般为（）。___
A. 2m
B. 2.6m
C. 3m
D. 5m
【单选题】
支柱侧面限界变化的原因是（）。___
A. 起道
B. 电动列车晃动
C. 支柱倾斜
D. 更换接触网设备
【单选题】
侧面限界值（）严重情况会使定位点或跨中接触线脱弓。___
【单选题】
在支柱上除划出红线标记外，还应标记出支柱（）、接触线距轨面设计高度、设计拉出值、曲线半径和外轨超高。___
A. 侧面限界
B. 拨道
C. 高程
D. 百米
【单选题】
支柱的负载主要是（）。___
A. 垂直负载
B. 水平负载
C. 弯矩
D. 垂直负载和水平负载
【单选题】
接触网支柱一般受垂直（）较小，而受水平负荷较大___
【单选题】
支持装置包括（）。___
A. 腕壁、棒式绝缘子及接触悬挂的悬吊零件
B. 定位管、定位器等
C. 接触线、承力索及吊弦
D. 支柱及基础
【单选题】
腕臂安装在支柱上，用以支持接触悬挂，并起（）负荷的作用___
【单选题】
在三个跨距的非绝缘锚段关节中，非工作支的接触线比工作支的接触线抬高（）___
A. 100mm
B. 150mm
C. 200mm
D. 250mm
【单选题】
在中心柱安装两套支持装置，悬吊的两支接触（）___
A. 一个为工作支，一个为非工作支
B. 可任意选用是否为工作支
C. 均为非工作支
D. 均为工作支
【单选题】
腕臂的作用是支持接触悬挂，并起（）的作用。___
A. 导电
B. 传递负荷
C. 调整导高
D. 美观
【单选题】
腕臂的长度与其所跨越线路股道的数目，接触悬挂的（），支柱侧面限界和支柱所在位置等因素有关。___
【单选题】
绝缘腕臂及拉杆与接触悬挂（）。___
A. 绝缘
B. 等电位
C. 共同接地
D. 机械分离
【单选题】
两相邻悬挂点等高相对差不得大于（）。___
A. 10mm
B. 15mm
C. 20mm
D. 25mm
【单选题】
影响腕臂装配的因素有导高、支柱侧面限界、（）等。___
A. 接触网高度
B. 结构高度
C. 隧道高度
D. 钢轨高度
【单选题】
地面段链型悬挂的结构高度目前多采用（）。___
A. 40mm
B. 1400mm
C. 2400mm
D. 3400mm
【单选题】
采用最广泛的腕臂是（）腕臂。___
A. 绝缘
B. 非绝缘
C. 双线路
D. 三线路
【单选题】
一般由6人一组安装腕臂，其中2人为（），3人起吊拉绳，1人拉晃绳。___
A. 杆下作业
B. 杆上作业
C. 杆上和杆下作业
D. 以上都不对
【单选题】
腕臂预配就是根据接触网设计平面图确定的安装图号，在保证接触线高度、结构高度及（）的情况下，预留必要的调整范围，将腕臂安装上支柱前，在地面对其进行的组装。___
A. 驰度
B. 限界
C. 拉出值
D. 导电性
【单选题】
腕臂绝缘子无破损和严重放电痕迹，绝缘子瓷釉拨落面积不能超过（）。___
A. 230mm2
B. 250mm2
C. 280mm2
D. 300mm2
【单选题】
根据中心锚结绝缘棒接地端距汇流排的绝缘距离不小于（）的设计要求，确定中心锚结底座位置。___
A. 100mm
B. 150mm
C. 200mm
D. 250mm
【单选题】
半补偿中心锚结应用于（）。___
A. 半补偿链型悬挂
B. 全补偿链型悬挂
C. 简单悬挂
D. 任意类型悬挂
【单选题】
中心锚结应尽量靠近锚段中部，中心锚结两边线索的（）应尽量相等。___
【单选题】
中心锚结拉线拉力应均衡适度，两端拉力应一致，中锚点（）。___
A. 不能出现弛度
B. 不能出现正弛度
C. 不能出现负弛度
D. 能出现弛度
【单选题】
半补偿中心锚结线夹两侧辅助绳长度应相等，安装后两侧张力均匀不出现（）。___
A. 张力
B. 弛度
C. 力矩
D. 以上都不对
【单选题】
全补偿链形悬挂的承力索和接触线两端都是补偿下锚，可能两端张力（）。___
A. 平衡但产生移动
B. 不平衡但不产生移动
C. 平衡但产生移动
D. 不平衡而产生移动
【单选题】
防窜中心锚结缺点是（）。___
A. 结构复杂
B. 安装复杂
C. 不防断线事故
D. 不防窜动
【单选题】
简单悬挂中心锚结在接触线上的固定点距悬挂定位点（）。___
【单选题】
隧道内半补偿链形悬挂中心锚结设在跨距的中间，在结构形式上与全补偿形式（）。___
A. 不同
B. 类同
C. 相同
D. 无可比性
【单选题】
线岔的作用是保持两导线在始触点（），不发生刮弓和钻弓事故。___
【单选题】
接触线处至中心锚结的距离大于500m时，选用（）限制管。___
A. 500型
B. 600型
C. 700型
D. 800型
【单选题】
对于单开道岔，标准定位时，两接触线相交于道岔导曲线两内轨距为（）处。___
A. 630mm
B. 725mm
C. 745mm
D. 760mm
推荐试题
【判断题】
内战爆发后，客观形势决定了人民没有走中间路线的余地，原先主张走第三条道路的各党派都靠近了中国共产党，站到了新民主主义革命的立场上来。
【判断题】
1949年9月的召开的中国人民政治协商会议，是新中国的创建会议，《共同纲领》起着临时宪法的作用。
【判断题】
民主党派参加新政协并在新中国参政，标志着民主党派地位的根本变化，它们不再是在野党，成为了中国人民民主专政的参加者。
【判断题】
人民民主专政的新中国的创建，标志着近代以来中国面临的两大历史任务的基本完成。
【单选题】
A vSphere content library administrator is attempting to unpublish the content library, but the option is grayed out as shown in the Exhibit. Which statement identifies the reason for not being able to unpublish? ___
A. The content library is optimized for syncing over HTTP.
B. A synchronization operation is in progress with this content library.
C. There are active subscriptions on this content library.
D. Underlying storage for this content library is not accessible.
【单选题】
Assuming a mirrored (RAID-1) object configuration, how many hosts must contribute storage in a non-stretched VMware vSAN cluster to satisfy the “Number of failures to tolerate” policy option?“n” is the desired “Number of failures to tolerate” value for all options.___
A. 2n+2
B. 2n
C. 2n+1
D. 3n
【单选题】
An administrator must change the statistics level for short-term performance monitoring and wants to collect metrics for all counters, excluding minimum and maximum rollup values. What would be the statistics level?___
A. Level 3
B. Level 1
C. Level 2
D. Level 4
【单选题】
In a vSphere environment, two resource pools are created as shown in the Exhibit. Each VM is configured with 1 GB of memory. When the administrator tried to power on VM3, the operation failed. What action in the resource pool settings will allow VM3 to power on successfully?___
A. Deselect Expandable Memory Reservation
B. Increase Memory Reservation
C. Deselect Expandable CPU Reservation
D. Increase the CPU Reservation
【单选题】
Which network is used by vSphere HA when VMware vSAN is enabled?___
A. Management network
B. vSphere Replication network
C. vMotion network
D. VSAN network
【单选题】
Which statement is correct when migrating from a Windows vCenter Server to the vCenter Server Appliance 6.5?___
A. Migration deployments do not migrate local OS users from the source vCenter Server.
B. Migration deployments support DHCP on the source vCenter Server.
C. Migration deployments allow the source vCenter Server to remain powered on afterwards.
D. Migration deployments support custom ports for all services on the source vCenter Server.
【单选题】
How can failback of a recovered virtual machine in vSphere Replication be performed?___
A. No action required, because failback is automatically performed to the source site.
B. Configure a new replication in the reverse direction at the target site.
C. Disable or Stop the virtual machine replication on the source site.
D. Power off and unregister the virtual machine on the target site.
【单选题】
After upgrading the vSphere infrastructure and VMware Tools to version 6.5, the “Upgrade VM Compatibility” option is grayed out in the vSphere Web Client. (See Exhibit.) What must the administrator do to enable the VM compatibility upgrade?___
A. VMware Tools should be upgraded last.
B. Restart the ESXi server.
C. Uninstall VMware Tools.
D. Power off the virtual machine.
【单选题】
What availability mode does vCenter HA provide?___
A. Active-Passive
B. Active-Standby
C. Active-Active
D. Load-balanced
【单选题】
In which scenario will vSphere DRS balance resources when set to Fully Automated?___
A. Hosts with only shared storage
B. Hosts are part of a vSphere HA cluster
C. Power Management is set to Balanced on hosts
D. Hosts with shared or non-shared storage
【单选题】
What VMware technology can be used to move physical servers to the vSphere infrastructure?___
A. VMware vMotion
B. VMware Converter
C. VMware vCenter Server
D. OVF transport
【单选题】
Upgrading vCenter Server with Microsoft SQL database fails with the following error message: The DB User entered does not have the required permissions needed to install and configure vCenter Server with the selected DB. Please correct the following error(s): %sWhat could cause this error?___
A. incorrect ports open on SQL Server
B. incorrect database on the SQL server
C. incorrect compatibility mode on the SQL server
D. incorrect permission on SQL Server database
【单选题】
What is a potential downside of having more than four paths per datastore?___
A. limits the storage protocols
B. increases storage latency for VM
C. limits the path selection policies
D. limits the number of LUNs per host
【单选题】
Which feature facilitates the sharing of templates via vCenter Server?___
A. Content Library
B. OVF
C. folders
D. vApp
【单选题】
A vSphere Administrator is in the process of configuring replication for a virtual machine, but is not able to select the Recovery Point Objective (RPO) value of 5 minutes. Which statement could explain why the RPO value cannot be lower than 15 minutes?___
A. The OS quiescing option is selected for Replication options.
B. The virtual machine hardware version is not compatible.
C. The target and source sites use different types of datastores.
D. The target and source sites are not using VMFS 6.0 datastore.
【单选题】
What advanced parameter defines a custom isolation IP address for a vSphere HA cluster?___
A. das.usedefaultisolationaddress
B. das.isolationshutdowntimeout
C. fdm.isolationpolicydelaysec
D. das.isolationaddress
【单选题】
Which method is supported for backing up the virtual machine that contains vCenter Server?___
A. differential
B. incremental
C. full image
D. individual disks
【单选题】
A vSphere Administrator must ensure that a user is able to view and manage the system configuration in vSphere Web Client. In the vCenter Single Sign-On domain, which group should the user be a part of?___
A. SystemConfiguration.BashShellAdministrators
B. ComponentManager. Administrators
C. Administrators
D. SystemConfiguration.Administrators
【单选题】
What is the minimum number of hosts that must contribute capacity to a non-ROBO single site VMware vSAN cluster?___
【单选题】
Which guest operating system supports PVRDMA?___
A. Windows (32-Bit)
B. Linux (32-Bit)
C. Windows (64-Bit)
D. Linux (64-Bit)
【单选题】
What is the correct way to replace the certificate on an existing vCenter Server that is part of a vCenter HA configuration?___
A. Put the vCenter HA in Maintenance mode, replace the certificate, exit Maintenance mode.
B. Shut down Passive and Witness nodes and replace the certificate on the Active node.
C. Remove the Passive and Witness nodes, replace the certificate, reconfigure the cluster.
D. Replace the certificate while all nodes are participating in the cluster.
【单选题】
The vSphere Data Protection performance analysis results in the “Conditionally Passed” status. What can cause this condition?___
A. The results did not meet the minimum performance expectations.
B. The read, write, and seek tests were successful.
C. The read and write tests were successful but the seek test failed.
D. The read and write tests were successful but the seek test skipped.
【单选题】
A vSphere Administrator wants to reserve 0.5 Gbps for virtual machines on each uplink on a disturbed switch that has 10 uplinks. What is the quota that should be reserved for the network resource pool?___
A. 10 Gbps
B. 5 Gbps
C. 100 Gbps
D. 0.5 Gbps
【单选题】
A vSphere administrator manages a cluster which includes critical and non-critical virtual machines. The cluster requires different permissions for contractors and non-contractors. How can the administrator exclude the contractor group from some of the critical VMs?___
A. Apply permission for both contractors and non-contractors on the cluster level.
B. Apply permission for both contractors and non-contractors on the cluster level. Remove permission on the critical VMs for contractors.
C. Remove permission for contractors on the cluster level. Apply permission on the critical VMs for noncontractors.
D. Apply permission for both contractors and non-contractors on the VMs. Remove permission on the critical VMs for contractors.
【单选题】
In an ESXi 6.5 cluster only "NFS datastore has running or registered virtual machines" returns. A vSphere HA cluster with four hosts has admission control configured to tolerate one host failure. Which statement is true if a fifth host is added?___
A. CPU and Memory capacity will be set to 50%.
B. CPU and Memory capacity will be set to 30%.
C. CPU and Memory capacity will be set to 25%.
D. CPU and Memory capacity will be set to 20%.
【单选题】
Which command can be run to troubleshoot connectivity problems with vmkernal network interfaces?___
A. esxcli network
B. vmkping
C. net-status
D. vicfg-vmknic
【单选题】
What counter should an administrator check to determine if a virtual machine is ballooning?___
A. swapinRate
B. vmmemctltarget
C. swapped
D. vmmemctl
【单选题】
By default, how often is the vCenter vpx user password automatically changed?___
A. 15 days
B. 60 days
C. 30 days
D. 45 days
【单选题】
Which metric in the Exhibit would identify high latency for a virtual machine operating system?___
A. QAVG/cmd
B. KAVG/cmd
C. DAVG/cmd
D. GAVG/cmd
【单选题】
What VM Monitoring setting would ensure that the failure interval for a virtual machine is defined as 120 seconds?___
A. High
B. Normal
C. Low
D. Medium
【单选题】
The business managers have asked the IT administrator to ensure configuration compliance in the vSphere infrastructure. The IT administrator wants to use Host Profiles to accomplish this, but is unable to do so. Why is the administrator unable to use Host Profiles?___
A. The infrastructure uses a vSphere Standard license.
B. The infrastructure has servers with various CPU families.
C. The user has only the “Administrator” role.
D. Host Profiles apply only to storage settings.
【单选题】
What is the result of a “Consolidate” action on a virtual machine?___
A. All snapshots on the virtual machines will be deleted.
B. The virtual machine will be reverted to its last snapshot.
C. Redundant delta disks will be combined and deleted.
D. A new snapshot with memory state will be created.
【单选题】
A Telco customer is implementing NFV using vSphere as the virtualization platform. Which feature can help achieve a high packet rate with lower CPU consumption?___
A. Network I/O Control
B. SplitRX
C. ERSPAN
D. LACP
【单选题】
What is the VMware-recommended best practice for Fibre Channel zoning?___
A. soft zoning
B. single-initiator-multiple-target zoning
C. single-initiator zoning
D. single-initiator-single-target zoning
【单选题】
How can a vSphere administrator ensure that a set of virtual machines run on different hosts in a DRS cluster?___
A. Use a VM-Host affinity rule.
B. Add the VMs to a vApp.
C. Use a VM-VM affinity rule.
D. Place the VMs in different folders.
【单选题】
vCenter Server Appliance Instance can be backed up using which Client Interface?___
A. vSphere Client Interface
B. vSphere Web Client Interface
C. VMware Host Client Interface
D. Virtual Appliance Management Interface
