【单选题】
工作接地的接地电阻一般不应超过___ Ω。
A. 3
B. 4
C. 5
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答案
B
解析
暂无解析
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电力系统中的各级电压线路及其联系的各级___, 这一部分叫做电力网,或称电网。
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电路处于 ___ 状态时 ,电路中的电流会因为过大而造成损坏电源、烧毁导线,甚至造成火灾等严重事故。
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磁场中磁力线在某区域的密度与该区域的磁场强弱___ 。
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屋顶上单支避雷针的保护范围可按保护角___ 确定。
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___ 对电气设备和电力系统安全运行危害极大。
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检修工作时凡一经合闸就可送电到工作地点的断路器和隔离开关的操作手把上应悬挂 :___。
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运行值班人员在室内进行巡回检查,如高压设备发生接地时,不得接近故障点___ 以内。
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线路验电应逐相进行。同杆架设的多层电力线路验电时,先___, 先验下层后验上层。
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检修工作地点,在工作人员上下铁架和梯子上应悬挂:___ 。
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所有断路器 ,隔离开关均断开,在有可能来电端挂好地线,说明设备处于 ___ 状态。
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工作监护人一般由___ 担任。
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交流高压真空接触器由___ 实现分闸。
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通常要求真空断路器的触头材料具有的性能之一是___ 。
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与真空断路器连接的引线导线弛度应该___。
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SF6 断路器是用 ___ 作为绝缘介质和灭弧介质。
A. 液态[图片 s_f_6.pn]
B. [ 图片 s_f_6.pn]气体
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小电流真空灭弧室一般采用___ 触头。
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Group 1 is granted console interaction on a VM folder. User 1 is granted no console interaction on the same VM folder. What will be the outcome if User 1 tries to access the console of a virtual machine?___
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Which statement is true regarding the use of VMFS3 datastores with vSphere 6.5?___
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An administrator wants to enable proactive HA by moving virtual machines automatically if a hardware alert is triggered. What are the three required settings? (Choose three.)___
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If vCenter Server 5.5 installation has one or more services deployed remotely, which three services are relocated to vCenter Server 6.5 on upgrade? (Choose three.)___
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What are three benefits of using a few large-capacity LUNs instead of many small-capacity LUNs? (Choose three.) ___
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Which three VMware-recommended best practices should an administrator follow before upgrading to vSphere 6.5? (Choose three.)___
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【多选题】
What are two requirements to enable EVC in vSphere DRS cluster? (Choose two.)___
A. CPUs must be from the same vendor.
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D. No VMs may be running in the cluster.
【多选题】
What three conditions could result in VMware Flash Read Cache being unable to claim a disk? (Choose three.)___
A. The disk is not listed in the VMware hardware compatibility guide.
B. The disk is not detected as an SSD.
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【多选题】
Boot from SAN is supported on which three storage technologies? (Choose three.)___
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C. NFS 4.1
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E. FC
【多选题】
Which two components are part of storage I/O multipathing on ESXi? (Choose two.)___
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【多选题】
Which two statements are true about Highly Available vSphere Auto Deploy infrastructure? (Choose two.)___
A. It helps prevent data loss.
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C. It requires two or more Auto
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【多选题】
The virtual machine log rotation size can be changed for all VMs by which two interfaces? (Choose two.)___
A. PowerCLI
B. vSphere Web Client
C. ESXi host client
D. esxcli
【多选题】
Which two configuration options can exclude virtual disks from snapshot operations? (Choose two.)___
A. Use RDM in virtual mode for virtual disk.
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【多选题】
Which two storage configurations on the source server are unsupported with VMware Converter? (Choose two.)___
A. Linux LVM
B. software RAID
C. GPT/MBR hybrid disks
D. Windows basic volumes
E. Windows dynamic volumes