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【判断题】
移动电气设备电源应采用高强度铜芯橡皮护套硬绝缘电缆
A. 对
B. 错
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答案
B
解析
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改革开放前我国强调以铝代铜作导线,以减轻导线的重量
A. 对
B. 错
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为了避免静电火花造成爆炸事故,凡在加工运输,储存等各种易燃液体、气体时,设备都要分别隔离
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B. 错
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接触器的文字符号为FR
A. 对
B. 错
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断路器在选用时,要求断路器的额定通断能力要大于或等于被保护线路中可能出现的最大负载电流
A. 对
B. 错
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刀开关在作隔离开关选用时,要求刀开关的额定电流要大于或等于线路实际的故障电流
A. 对
B. 错
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电动势的正方向规定为从低电位指向高电位,所以测量时电压表应正极接电源负极、而电压表负极接电源的正极
A. 对
B. 错
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接地电阻测试仪就是测量线路的绝缘电阻的仪器
A. 对
B. 错
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电压的大小用电压表来测量,测量时将其串联在电路中
A. 对
B. 错
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万用表使用后,转换开关可置于任意位置
A. 对
B. 错
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并联电路的总电压等于各支路电压之和
A. 对
B. 错
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欧姆定律指出,在一个闭合电路中,当导体温度不变时,通过导体的电流与加在导体两端的电压成反比,与其电阻成正比
A. 对
B. 错
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《安全生产法》所说的“负有安全生产监督管理职责的部门”就是指各级安全生产监督管理部门
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在设备运行中,发生起火的原因是电流热量是间接原因,而火花或电弧则是直接原因
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接了漏电开关之后,设备外壳就不需要再接地或接零了
A. 对
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低压验电器可以验出500V以下的电压
A. 对
B. 错
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当拉下总开关后,线路即视为无电
A. 对
B. 错
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锡焊晶体管等弱电元件应用100W的电烙铁
A. 对
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手持式电动工具接线可以随意加长
A. 对
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为改善电动机的启动及运行性能,笼形异步电动机转子铁芯一般采用直槽结构
A. 对
B. 错
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转子串频敏变阻器启动的转矩大,适合重载启动
A. 对
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同一电器元件的各部件分散地画在原理图中,必须按顺序标注文字符号
A. 对
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对电机轴承润滑的检查,可通电转动电动机转轴,看是否转动灵活,听有无异声
A. 对
B. 错
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使用改变磁极对数来调速的电机一般都是绕线型转子电动机
A. 对
B. 错
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导线接头的抗拉强度必须与原导线的抗拉强度相同
A. 对
B. 错
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一般情况下,接地电网的单相触电比不接地的电网的危险性小
A. 对
B. 错
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通电时间增加,人体电阻因出汗而增加,导致通过人体的电流减小
A. 对
B. 错
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单相220V电源供电的电气设备,应选用三极式漏电保护装置
A. 对
B. 错
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机关、学校、企业、住宅等建筑物内的插座回路不需要安装漏电保护装置
A. 对
B. 错
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雷击产生的高电压和耀眼的光芒可对电气装置和建筑物及其他设施造成毁坏,电力设施或电力线路遭破坏可能导致大规模停电
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雷电按其传播方式可分为直击雷和感应雷两种
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电容器放电的方法就是将其两端用导线连接
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時間繼電器的文字符號為KM
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熔断器的特性,是通过熔体的电压值越高,熔断时间越短
A. 对
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特种作业人员必须年满20周岁,且不超过国家法定退休年龄
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载流导体在磁场中一定受到磁场力的作用
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Bidirectional CHAP is support by which storage initiator?___
A. software FCoE HBA
B. Fibre Channel HBA
C. independent hardware iSCSI HBA
D. dependent hardware iSCSI HBA
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What is a pool of raw storage capacity that a storage system can provide to Virtual Volumes?___
A. protocol endpoint
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【单选题】
vSphere 6.5 DRS is now Network-Aware. Based on network utilization, when will DRS balance VMs?___
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【单选题】
A scripted upgrade of ESXi fails due to an incorrect parameter in the upgrade script. What file must the administrator modify to correct the problem?___
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【单选题】
A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machine VM2. If a user is a member of group A and B, what action can the user perform?___
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What is the command for updating an ESXi host?___
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【单选题】
A vSphere Administrator would like to identify which physical NUMA node their virtual machine is currently residing on. What esxtop metric would provide this information?___
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【单选题】
How can a vSphere administrator ensure that two virtual machines never run on the same datastore in a datastore cluster, while permitting the VMs to be load-balanced?___
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What is the VMware-recommended way to move a physical adapter out of Network I/O Control’s scope?___
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A VM folder contains VM1 and VM2. Group A has permission to power on virtual machines, defined on the VM folder and its children. Group B has permission to power off virtual machines, defined on the VM folder and its children. If a user is a member of Groups A and B, what will be the user’s effective permission on VM1 and VM2?___
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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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【单选题】
In the Exhibit, each VM has a 1GHz non-expandable reservation. If all VMs are powered on in sequence, what would be the outcome?___
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【单选题】
vSphere 6.5 introduced MAClearning capabilities for VMware’s virtual switches. What three benefits will it provide? (Choose three.)___
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【单选题】
What is the default pathing policy for most active-active arrays?___
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Which command will show the iSCSI sessions on a ESXi 6.5 host?___
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Which of the following is not a parameter for traffic filtering or marking?___
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A vSphere administrator wants to enable a virtual machine with Secure Boot, but in VM setting, Secure Boot option was not found under Boot Options. What could be the cause?___
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【单选题】
A virtual machine is connected on a distributed port group where the average bandwidth configured in the traffic shaping policy is 100 Mbps. The VM network adapter is configured with a reservation of 200 Mbps. What is the VM’s effective bandwidth?___
A. 200 Mbps
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【多选题】
What are two reasons why a datastore in a Storage DRS cluster cannot enter maintenance mode?(Choose two.)___
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【多选题】
What two methods are used to configure VMware vSphere Storage I/O Control shares and limits? (Choose two.)___
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D. Assign shares and limits using VM storage policies.
【多选题】
ESXi 6.5 introduces VMFS6, which supports both 512e and 512n devices. What three configurations are supported when using these devices? (Choose three.) ___
A. Hosts with both 512e and 512n devices.
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C. Datastore Extents spanned between both 512e and 512n devices.
D. Storage DRS clusters containing only both 512e and 512n devices.
【多选题】
A vSphere Administrator observes that the Primary VM configured with Fault Tolerance is executing slowly. After further investigation, it is determined that the Secondary VM is on an overcommitted ESXi host. What two methods will correct the problem? (Choose two.)___
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B. Use vMotion to migrate the Secondary VM to a different ESXi host.
C. Configure a CPU limit on the Primary VM which will also apply to the Secondary VM.
D. Turn off and turn on FT in order to recreate the Secondary VM on a different datastore.
【多选题】
Which two features require the use of Host Profiles? (Choose two.)___
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【多选题】
What three processes on the vCenter Server Appliance (VCSA) does“vmware-watchdog monitor? (Choose three.) ___
A. vmware-eam
B. vmcad
C. vmware-vpostgres
D. vpxd
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【多选题】
What three processes on the vCenter Server Appliance (VCSA) does“vmware-watchdog monitor? (Choose three.) ___
A. vmware-eam
B. vmcad
C. vmware-vpostgres
D. vpxd
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【多选题】
Which two statements correctly describe VM-Host affinity rules? (Choose two.) ___
A. When there is more than one VM-Host affinity rule in a vSphere DRS cluster, the rules are applied equally.
B. After creating a VM-Host affinity rule, its ability to function in relation to other rules is predetermined.
C. When there is more than one VM-Host affinity rule in a vSphere
D. RS cluster, the rules will be ranked.
【多选题】
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.)___
A. Set vSphere DRS Automation to Partially Automated.
B. Turn on Proactive HA.
C. Set the Proactive HA Automation Level to Manual.
D. Set the Proactive HA Automation Level to Automated.
E. Turn on vSphere HA and vSphere DRS.
【多选题】
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.)___
A. vCenter Inventory Services
B. vSphere Authentication Proxy
C. vSphere Web Client
D. vSphere
E. SXi Dump Collector
【多选题】
What two debugging levels can a virtual machine be configured to? (Choose two.)___
A. Verbose
B. Debugging
C. Statistics
D. Trivia
【多选题】
What are three benefits of using a few large-capacity LUNs instead of many small-capacity LUNs? (Choose three.) ___
A. Better performance because there is less contention for a single volume.
B. More flexibility for resizing virtual disks.
C. Less wasted storage space.
D. More flexibility to create virtual machines without adding new LUNs.
E. Fewer VMFS datastores to manage.
【多选题】
Which two configurable options are available in Boot Options for a virtual machine? (Choose two.)___
A. Tools Upgrades
B. Encryption
C. Firmware
D. Force BIOS setup
【多选题】
Which three VMware-recommended best practices should an administrator follow before upgrading to vSphere 6.5? (Choose three.)___
A. Disconnect ESXi host from vCenter.
B. VMware Tools are installed in the virtual machine.
C. Ensure that the system hardware complies with ESXi requirements.
D. Back up the host.
E. Check the interoperability of any other software integrated with vSphere.
【多选题】
What are two requirements to enable EVC in vSphere DRS cluster? (Choose two.)___
A. CPUs must be from the same vendor.
B. EVC must use the lowest possible baseline supported by the hardware.
C. CPUs must be in the same family and of the same speed.
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.
C. The disk is not detected as local.
D. The disk is in use by VMFs.
【多选题】
Boot from SAN is supported on which three storage technologies? (Choose three.)___
A. VMware vSAN
B. FCoE
C. NFS 4.1
D. iSCSI
E. FC
【多选题】
Which two components are part of storage I/O multipathing on ESXi? (Choose two.)___
A. SATP
B. VASA
C. PSP
D. VAAI
【多选题】
Which two statements are true about Highly Available vSphere Auto Deploy infrastructure? (Choose two.)___
A. It helps prevent data loss.
B. It is a prerequisite for using vSphere Auto Deploy with stateful install.
C. It requires two or more Auto
D. eploy servers.
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