相关试题
【单选题】
线路过电流保护的动作电流是按___整定的。
A. 线路的负荷电流
B. 线路最大负荷电流
C. 大于允许的过负荷电流
【单选题】
用钳型电流表测量单相负载电流的方法是___
A. 钳口夹住一根线
B. 钳口夹住二根线
C. 把钳形表串联在负载电路中
【单选题】
变电所内铜金属性设备接头在过热后，其颜色会变得呈___
【单选题】
运行中直流回路的绝缘标准为___
A. 0.5兆欧
B. 不低于1兆欧
C. 1兆欧
D. 0.8兆欧
【单选题】
通常所说的交流电压220v或380v指的是___
A. 平均值
B. 有效值
C. 瞬时值
D. 最大值
【单选题】
变压器自动跳闸时，应检查保护装置动作信号，如果是___动作可强送恢复送电
A. 过负荷保护
B. 速断保护
C. 瓦斯保护
D. 差动保护
【单选题】
变压器的过流保护动作电流整定值，应躲过变压器低压侧的___电流
A. 最大短路
B. 最大过负荷
C. 额定
D. 最小短路
【单选题】
兆欧表遥测速度规定为___
A. 100v/min
B. 1250v/min
C. 120 v/min
【单选题】
测量交流时，可使用电磁式、电动式或感应式等仪表，其中___应用较多。
【单选题】
一般额定电压在500V以下的设备，选用___兆欧表。
A. 2500V
B. 2000V
C. 500V
【单选题】
变压器空载损耗大致上与电压的平方成___。
【单选题】
并联运行的变压器,阻抗电压相差不宜超过___。
【单选题】
设备发生接地故障时，跨步电压值与设备运行电压值___
【单选题】
防雷装置的引下线若采用钢管保护时，应于引下线___，以减小通过雷电流的阻抗，减少接地装置的冲击阻抗
【单选题】
变压器发生故障后，在气体继电器中发现黑色易燃气体这是由于___产生的。
A. 木质绝缘过热分解
B. 纸板绝缘过热分解
C. 变压器绝缘油过热分解
【单选题】
电压互感器为防止二次侧短路烧毁，应装设___作为保护。
【单选题】
带电作业应设专责监护人，监护的范围不准超过___个作业点。
【单选题】
电流互感器的外皮最高允许温度为___。
【单选题】
按照《安全生产法》的规定，国务院安全生产监督管理部门对全国安全生产工作实施___。
A. 综合管理
B. 综合监督管理
C. 监督管理
D. 规划管理
【单选题】
电缆施工完成后应将穿越过的孔洞进行封堵，以达到___、防火和防小动物的要求。
【单选题】
电压互感器在运行中，二次绕组必须可靠接地，以防止___时二次侧串入高电压。
A. 绝缘击穿
B. 感应电压
C. 正常运行
D. 过电压
【单选题】
第一、二种工作票和带电作业工作票的有效时间，以批准的___期为限。
A. 停役
B. 检修
C. 停电
D. 施工与检修是同一个意思
【单选题】
___是线路运行中出现最多的电气故障。
A. 缺相
B. 两相短路
C. 单相接地
D. 三相短路
【单选题】
绝缘手套的测验周期是___。
A. 每年一次
B. 六个月一次
C. 五个月一次
【单选题】
危及人员生命的电流一般大于___。
A. 50mA
B. 500mA
C. 1A
D. 5A
【单选题】
在室外高压设备上工作，应在工作地点四周装设围栏，四周围栏上悬挂适当数量的___标示牌，标示牌应朝向围栏里面。
A. “从此进出！”
B. “在此工作！
C. “止步，高压危险！”
【单选题】
特种作业人员的安全技术考核是以___考核为主。
A. 实际操作技能
B. 安全生产管理知识
C. 事故现场勘验技术
【单选题】
在原工作票的停电及安全措施范围内增加工作任务时，应由工作负责人征得___和工作许可人同意，并在工作票上增填工作项目。
【单选题】
电力电缆不得过负荷运行，在事故情况下， 10k V以下电缆只允许连续___运行。
A. 1 h 过负荷 35 ％
B. 1.5h 过负荷 20 ％
C. 2h 过负荷 15 ％
【单选题】
___是在电气设备上工作保证安全的组织措施之一。
A. 交接班制度
B. 工作票制度
C. 操作票制度
【单选题】
电流互感器二次侧___。
A. 可以装设熔断器
B. 不允许装设熔断器
C. 必须选择合适的熔断器
D. 必须选择合格的熔断器
【单选题】
触电急救进行胸外按压，按压深度通常成人伤员为___。
【单选题】
长期停用或新领用的电动工具应用500Ⅴ的绝缘电阻表测量其绝缘电阻，如带电部件与外壳之间的绝缘电阻值达不到___，应进行维修处理。
A. 2KΩ
B. 2MΩ
C. 4KΩ
D. 4MΩ
【单选题】
变压器绝缘自投入运行后, 在允许条件下运行, 其寿命可达___年。
A. 25～30
B. 20～25
C. 15～20
D. 10～15
【单选题】
电气设备防止感应过电压的办法是___。
A. 装设避雷针
B. 装设避雷线
C. 装设避雷器
D. 装设屏蔽线
【单选题】
变压器的电流速断保护与___保护配合，以反应变压器绕组及变压器电源侧的引出线套管上的各种故障
推荐试题
【多选题】
A physical Windows 2008 R2 Server is converted to a virtual machine using VMware vCenter Converter. Upon completion of the conversion and subsequent power on operation, the virtual machine fails to boot and the message below is observed in the Console of the virtual machine: <STOP 0x0000007B INACCESSIBLE_BOOT_DEVICE>. Which two potential issues may be causing this boot failure? (Choose two.)___
A. An incorrect SCSI controller was selected during conversion.
B. Incompatible software drivers were migrated into the virtual machine from the source machine.
C. The vmdk file backing the virtual machine was thick provisioned.
D. A snapshot was taken immediately after the conversion completed.
【多选题】
An administrator is configuring the Failover Order option on a vSphere Distributed Switch. Which two options should be used with IP-hash load balancing? (Choose two.)___
A. Active Uplinks
B. Standby Uplinks
C. Unused Uplinks
D. Override Failover Order
【多选题】
An administrator is configuring the Maximum Transmission Unit value on a vSphere Distributed Switch. Which two options are typical values for ESXi networking? (Choose two.)___
A. 1492
B. 1500
C. 9000
D. 9089
【多选题】
Which two configurable options apply to both virtual machine CPU and memory allocation? (Choose two.)___
A. Reservation
B. Shares
C. Resource Pool
D. Reserve All
【多选题】
When attempting to power on a Virtual Machine you observe the following error: <Cannot open the disk '/vmfs/volumes/volume/vm/vm-000002.vmdk' or one of the snapshot disks it depends on.> Which three actions will be the best solutions to address this problem? (Choose three.)___
A. Verify that the virtual machine's disk files are present.
B. Investigate the host and virtual machine log files.
C. Verify the vmdk descriptor files and if required, recreate them.
D. Delete the disk file preventing the power on operation.
E. Migrate or register the virtual machine to a different host.
【多选题】
An administrator has been tasked with enabling High Availability ___ on a cluster in a vSphere 6.x environment with default settings. The cluster configures properly and there are no errors. The next day when powering on a virtual machine, an error is presented: <Not Enough Failover Resources>. Which three scenarios are likely causes of this error message? (Choose three.)(CDE)
A. The default VM Monitoring Sensitivity is set too high.
B. There are not enough datastore heartbeat datastores configured by default.
C. The default slot size in the cluster is set too high.
D. There are virtual machines with large CPU reservations.
E. A host is in maintenance mode for a replacement of a failed Hard Drive.
【多选题】
vMotion can be performed between which three physical boundaries? (Choose three.)___
A. Between two vCenter Server Systems
B. Between two vSphere Distributed Virtual Switches
C. Between two vCenter Server Datacenter objects
D. Between two VMware NSX Layer 4 segments
E. Between two NFS datastores
【多选题】
An administrator configures vSphere Replication for a virtual machine and enables multiple point in time (PIT) instances under the recovery settings in the Configure Replication wizard. Which two statements are correct for vSphere Replication with multiple point in time instances enabled? (Choose two.)___
A. vSphere Replication retains a number of snapshot instances of the virtual machine on the target site based on the retention policy that you specify.
B. vSphere Replication uses the virtual machine's snapshot instances to define the target site Point in Time instance based on the retention policy that you specify.
C. vSphere Replication does not support virtual machines with snapshots.
D. vSphere Replication supports virtual machines with snapshots.
【多选题】
An administrator is virtualizing a physical application server and adding it to an existing multi-tiered vApp. The application license is currently tied to the physical NIC's MAC address, so the administrator needs to ensure the license will function properly in the virtual machine. Which two actions can the administrator take to satisfy this task? (Choose two.)___
A. Set the MAC address for the vNIC in the guest operating system.
B. Install the physical server's NIC into the ESXi host.
C. Configure the MAC address for the vNIC using the vSphere Web Client.
D. Assign the physical server NIC's MAC address in the vSphere Distributed Switch.
【多选题】
Which two Fibre Channel zoning options are supported with vSphere 6.x? (Choose two.)___
A. Single-Initiator
B. Single-Initiator-Single-Target
C. Multiple-Initiators-Single-Target
D. Multiple-Initiators-Multiple-Targets
【多选题】
An administrator is attempting to remove an ESXi 6.x host from a vSphere Distributed Switch (vDS). When the administrator attempts to remove the host, the following error is observed: <The resource '16' is still in use.> What three steps are needed to successfully remove the host from the switch? (Choose three.)___
A. Select Manage Ports on the vDS for the host.
B. Locate all ports currently in use on the vDS for the host.
C. Migrate or delete any vmkernel or virtual machine adapters associated with the switch.
D. Remove all network cards from the switch before trying to remove the host.
E. Create a standard switch for everything to be automatically be migrated to.
【多选题】
Which two Virtual SAN related actions might start resynchronization of virtual machine objects? (Choose two.)___
A. Editing a virtual machine storage policy to increase the number of replicas.
B. Editing a virtual machine storage policy to reduce the number of replicas.
C. Editing a virtual machine storage policy to increase the number of disk stripes.
D. Editing a virtual machine storage policy to reduce the number of disk stripes.
【多选题】
An administrator is troubleshooting basic network connectivity issues. Which two scenarios are potential issues that this administrator might face? (Choose two.)___
A. The vSwitch is not attached to the correct physical network.
B. The portgroup is not configured to use correct VLAN.
C. Traffic shaping is configured incorrectly.
D. Jumbo frames is configured incorrectly.
【多选题】
Which three items should be validated prior to installing ESXi 6.x? (Choose three.)___
A. Remote Storage has been disconnected.
B. Installation media is available.
C. Server hardware clock is set to UTC.
D. Storage has been partitioned with a VMFS volume.
E. Network cards have been setup to use Jumbo
F. rames.
【多选题】
An administrator is performing an interactive installation of ESXi 6.x. Which three options are available for installation? (Choose three.)___
A. DVD
B. USB
C. PXE
D. Scripted
E. Auto Deploy
【多选题】
After installation of a host in your test environment, you need to move it to production. The only major change that needs to be made is that the hostname of the server needs to change. What are two ways that an administrator can change the host name without editing configuration files on the host directly? (Choose two.)___
A. Login to the Direct Console User Interface and change it from here.
B. Edit the Default TCP/IP Configuration from the vSphere Web Client.
C. Use the Ruby vSphere Client to send a script to the ESXi host that updates the hostname.
D. Update the information in DNS and the
E. SXi host will automatically update with these changes.
【多选题】
An administrator has unsuccessfully attempted several times to install an Operating System inside a virtual machine. The administrator finds that the installation fails at random intervals. Which two actions can be taken to resolve this issue? (Choose two.)___
A. Verify the md5sum and if invalid, download the installation files again.
B. Attempt the installation an additional time.
C. Attempt to use a different installation media or installation method.
D. Create a new virtual machine and attempt the installation with the existing media.
【多选题】
VMware tools is failing to install on a Microsoft Windows virtual machine. What are two possible situations that would prevent the installation? (Choose two.)___
A. The VMware tools installation media is corrupt.
B. The incorrect Operating System was selected in the virtual machine options.
C. The software prerequisites have not been installed.
D. The prerequisite services have not been started.
【多选题】
As part of a multisite Single Sign-On (SSO) deployment what two steps are required to ensure that a change to one Single Sign-On instance is propagated to the other instances? (Choose two.)___
A. Schedule a Replication Task on the primary instance
B. Select the first instance during the installation of subsequent instances
C. During the installation of each instance choose Linked-Mode
D. Enable Synchronize to Active Directory on each instance
【多选题】
You need to add an object to an existing vApp using the vSphere Web Client. How is this accomplished?___
A. Create an Object Inside the vApp.
B. Add an Object to a vApp.
C. Add an Object to the
D. atastore the vApp is located in.
【多选题】
Which three steps must be taken to use vSphere Update Manager 6.x to upgrade an ESXi 5.5 host to vSphere 6.x? (Choose three.)___
A. Download an ESXi Image.
B. Configure the vSphere Update Manager Download Service.
C. Create a baseline and attach it to the ESXi Host.
D. Scan the vCenter Content Library for the
E. SXi Image.
【多选题】
Which two options would allow a database administrator, with no access to the vSphere infrastructure, to connect to a virtual machine? (Choose two.)___
A. Use the Virtual Machine Remote Console (VMRC).
B. Use Remote Desktop Protocol (RDP) to connect.
C. Ask the vSphere administrator to grant permission to access the console through vCenter Server.
D. Ask the vSphere administrator to grant permission to access with the Horizon View Direct Connect Client.
【多选题】
Which three are architecture components of vRealize Operations? (Choose three.)___
A. Identity Server
B. Administrative Server
C. Analytics Server
D. Database Server
E. Connection Broker
【单选题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
A. 手动阀手动阀
B. 撒旦
C. 反对法
D. 第三方
【单选题】
金克拉金克拉撒退热贴开绿灯技术的（）
A. 是否
B. 阿斯顿
C. 撒旦
D. 感到反感
【单选题】
而非热舞法国会开绿灯技术的（）
A. 撒的
B. 热个股分化
C. 返回
D. 而我认为
【单选题】
十大富豪不给发货返回返回返回（）
A. dfdfgd
B. 梵蒂冈梵蒂冈
C. 广泛大概
D. 热
【多选题】
马克思主义哲学所讲的静止是指___
A. 运动的一种特殊形式
B. 绝对不动
C. 排斥运动
D. 事物处于量变状态
E. 事物在特定参考系中未发生位置变动
【多选题】
物质和运动的关系是___
A. 运动是物质的固有属性
B. 物质是运动的承担者
C. 运动是物质的存在方式
D. 运动不一定是物质的运动
E. 物质不一定都在运动
【多选题】
社会的物质性体现在___
A. 劳动是社会产生和存在的决定性因素
B. 在社会中不存在精神的现象和活动
C. 物质资料的产生是社会历史的前提
D. 全部社会生活在本质上是实践的
E. 社会生活中不存在物质关系以外的其他关系
【多选题】
意识的能动作用表现在___
A. 反映客观世界
B. 创造物质世界
C. 通过实践改造客观世界
D. 创造理论体系
E. 为自然界创造秩序
【多选题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
A. 手动阀手动阀
B. 撒旦
C. 反对法
D. 第三方
【多选题】
金克拉金克拉撒退热贴开绿灯技术的（）
A. 是否
B. 阿斯顿
C. 撒旦
D. 感到反感
【多选题】
而非热舞法国会开绿灯技术的（）
A. 撒的
B. 热个股分化
C. 返回
D. 而我认为
【多选题】
十大富豪不给发货返回返回返回（）
A. dfdfgd
B. 梵蒂冈梵蒂冈
C. 广泛大概
D. 热
【判断题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
