相关试题
【判断题】
由于手弧焊设备的额定电流值不大于500A，所以手弧焊时的静特性曲线为上升特性区
【判断题】
焊接接头是由焊缝金属和热影响区二部分组成的
【判断题】
氩弧焊焊接的工件比手弧焊焊接的工件变形大
【判断题】
等离子弧焊时，为了保持焊接工艺参数的稳定，应采用具有陡降外特性的直流电源
【判断题】
锅炉压力容器焊缝外观尺寸检验有焊缝宽度、余高、角变形、错边等
【判断题】
焊接是电流过小，焊速过高，热量不够或者焊条偏离坡口一侧易产生未熔合
【判断题】
若磁粉探伤是没有缺陷，磁场是不均匀的，磁力线会发生弯曲
【判断题】
弯曲试验时，侧弯易发现焊缝根部缺陷，而背弯能检验焊层与焊件之间的结合强度
【单选题】
能够完整地反映晶格特征的最小几何单元称为___。
【单选题】
下列金属中具有体心立方晶格的是___。
A. Cr
B. Cu
C. Al
D. γ-Fe
【单选题】
一般纯金属的结晶温度都比理论结晶温度___。
【单选题】
合金组织大多数都属于___。
A. 金属化合物
B. 单一固溶体
C. 机械混合物
D. 纯金属
【单选题】
合金钢的性能主要取决于它的___，但可用热处理方法通过改变它的组织来改变它的性能。
A. 工艺性能
B. 机械性能
C. 化学成分
D. 物理成分
【单选题】
Fe-Fe3C相图中的Gs线是冷却时奥氏体析出铁素体的开始线，奥氏体向铁素体的转变是___。
A. 碳在奥氏体中的溶解度达到饱和的结果
B. 溶剂金属发生同素异构转变的结果
C. 奥氏体发生共析转变的结果
D. 溶剂金属发生同素同构转变的过程
【单选题】
为了消除合金铸锭及铸件在结晶过程中形成的枝晶偏析，采用的退火方法为___
A. 完全退火
B. 等温退火
C. 球化退火
D. 扩散退火
【单选题】
工件出现硬度偏高这种退火缺陷时，其补救办法是___
A. 调整加热和冷却参数，重新进行一次退火
B. 进行一次正火
C. 进行一次回火
D. 以上均不行
【单选题】
9。35号钢铸造后存在魏氏体组织，再经正火处理后，可得到的均匀细小的铁素体与___晶体，使机械性能大大改善。
A. 珠光体
B. 奥氏体
C. 渗碳体
D. 莱氏体
【单选题】
正火与退火相比，主要区别是正火冷却速度较快，所获得的组织___比退火高些。
A. 较细，强度，硬度
B. 较粗，强度，硬度
C. 较细，塑性、硬度
D. 较粗，塑性、硬度
【单选题】
淬火钢在回火时，随着回火温度的升高，其机械性能变化趋势是___
A. 强硬度降低，塑韧性提高
B. 强硬度降低，塑韧性降低
C. 强硬度提高，塑韧性降低
D. 强硬度提高，塑韧性提高
【单选题】
回火时，决定钢的组织和性能的主要因素是回火温度，回火温度可根据工件要求的___来选择。
A. 力学性能
B. 物理性能
C. 化学性能
D. 工艺性能
【单选题】
通电导体在磁场中受到电磁力的大小与___。
A. 导体中的电流成正比，与导体在磁场中的有效长度成反比
B. 导体中的电流及导体在磁场中的有效长度成正比
C. 导体中的电流及导体在磁场中的有效长度成反比
D. 导体中的电流成反比，与导体在磁场中的有效长度成正比
【单选题】
磁组大小与磁路___
A. 长度成正比，与铁芯截面面积成反比
B. 长度成反比，与铁芯截面面积成正比
C. 长度成正比，与铁芯截面面积平方成反比
D. 长度平方成反比，与铁芯截面面积成正比
【单选题】
变压器工作时其初次级的电流与初次级电压或匝数的关系是___
A. 与初次级电压成正比，与匝数成反比
B. 与初次级电压或匝数成反比
C. 与初次组电压与反比，与匝数成正比
D. 与初次级电压或匝数成正比
【单选题】
BX—500型弧焊变压器的结构，它实际上是一种带有___的单相变压器。
A. 电抗器
B. 电磁性
C. 双绕组
D. 电容器
【单选题】
空气电离后由___组成。
A. 电子和正离子
B. 原子
C. 分子
D. 中性粒子
【单选题】
维持电弧放电的电压一般为___。
A. 10~50V
B. 50~100V
C. 100~200V
D. 220~380V
【单选题】
手弧焊正常施焊时，电弧的静特性曲线在U形曲线的___
A. 陡降段
B. 缓降段
C. 水平段
D. 上升段
【单选题】
埋弧自动焊在正常电流密度下焊接是其静特性为___
A. 平特性区
B. 上升特性区
C. 陡降特性区
D. 缓降特性区
【单选题】
钨极氩弧焊在大电流区间焊接时，静特性为___
A. 平特性区
B. 上升特性区
C. 陡降特性区
D. 缓降特性区
【单选题】
用碱性焊条焊接时，焊接区内的气体主要是___
A. CO2和CO
B. N2和O2
C. O2和水蒸气
D. N2和H2
【单选题】
焊接化学冶金过程中焊接电弧的温度很高，一般可达___
A. 600~800 ℃
B. 1000~2000℃
C. 6000~8000 ℃
D. 9000~9500℃
【单选题】
焊缝中，与氢无关的缺陷是___。
A. 气孔
B. 白点
C. 冷裂纹
D. 时效硬化
【单选题】
在焊接接头中，由熔化的母材和填充金属组成的部分叫___
A. 熔合区
B. 焊缝
C. 热影响区
D. 正火区
【单选题】
不易淬火钢焊接热影响区中综合性能最好的区域是___
A. ，过热区
B. 正火区
C. 部分相变区
D. 再结晶区
推荐试题
【多选题】
Which three VLAN Tagging modes are available in vSphere 6.x? (Choose three.)___
A. External Switch Tagging
B. Private VLAN Tagging
C. Virtual Switch Tagging
D. VXLAN Tagging
E. Virtual Guest Tagging
【多选题】
Which two statements are true about VMFS5 datastores on ESXi 6.x? (Choose two.)___
A. Virtual Disk (VMDK) size can be larger than 2TB.
B. Datastore extent size can be larger than 2TB.
C. Only Physical Mode Raw
D. evice Map (Passthrough-RDM) can be larger than 2TB.
【多选题】
Which two statements are correct when turning off a Distributed Resource Scheduler (DRS) Cluster? (Choose two.)___
A. The resource pool hierarchy of the DRS cluster is maintained.
B. The resource pool hierarchy of the DRS cluster is removed.
C. The affinity settings of the
D. RS cluster are removed and not maintained when DRS is re-enabled.
【多选题】
An administrator is creating a new Virtual SAN cluster on a Layer 2 network. There is an existing Virtual SAN cluster on the same Layer 2 network. Which two actions would allow the new Virtual SAN cluster to coexist with the older cluster? (Choose two.)___
A. Change the default Multicast Address on the new Virtual SAN cluster.
B. Change the default Unicast Address on the new Virtual SAN Cluster.
C. Create a separate VLAN for each cluster.
D. Create an ARP Alias for the Virtual SAN VMkernel Network Adapter.
【多选题】
A vCenter Operations Manager 5.7 environment is upgraded to vRealize Operations. After the upgrade, the analytics services fail to start. Which three steps must be taken to resolve the problem? (Choose three.)___
A. Take the vRealize Operations cluster offline.
B. Delete the activity persistence files.
C. Bring the cluster back online.
D. Remove any unresponsive nodes.
E. Stop the CaSA service.
【多选题】
An organization has an ESXi 6.x host that contains two resource pools. The host is being relocated to a DRS cluster. What two actions can be taken to integrate the host into the cluster, and what would happen to the existing ESXi resource pool hierarchy as a result? (Choose two.)___
A. Place all of the host's virtual machines into the DRS cluster root resource pool. The resource pools present on the host will be deleted.
B. Create a resource pool for the ESXi host's virtual machines and resource pools. The resource pools present on the host will be deleted.
C. Place all of the host's virtual machines into the DRS cluster root resource pool. The resource pools present on the host will be preserved.
D. Create a resource pool for the
E. SXi host's virtual machines and resource pools. The resource pools present on the host will be preserved.
【多选题】
Which two parameters are required when adding an iSCSI target to an iSCSI Software Adapter using Dynamic Discovery? (Choose two.)___
A. The iSCSI device's IP Address or Fully Qualified Domain Name
B. The Port Number
C. The iSCSI device's iSCSI Qualified Name (IQN)
D. The Default Gateway IP Address
【多选题】
Which two SMTP Notification Event Details are specific to alarms triggered by events? (Choose two.)___
A. User Name
B. Summary
C. Old Status
D. Target
【多选题】
Which two High Availability ___ Cluster admission control policies can help avoid resource fragmentation? (Choose two.)(AC)
A. Define failover capacity by static number of hosts
B. Define failover capacity by reserving a percentage of the cluster resources
C. Use dedicated failover hosts
D. Use Virtual Machine Monitoring
【多选题】
An attempt to enable vSphere Fault Tolerance for a powered-on virtual machine fails. Which two scenarios would result in this failure? (Choose two.)___
A. The virtual machine has three vCPUs configured.
B. The host on which the virtual machine is running has insufficient memory resources.
C. The virtual machine has insufficient resources to accommodate full reservation plus the overhead memory.
D. VMware High Availability is enabled on the cluster of which this host is a member.
【多选题】
A vApp template recently added to a Content Library is not displayed. Which two actions could correct this problem? (Choose two.)___
A. Manually synchronize the library
B. Select the Download all library content immediately option
C. Select the Sync subscribed library option
D. Manually download the vApp template
【多选题】
What are three valid disk configurations for the vSphere Data Protection 6.x Appliance? (Choose three.)___
A. 500GB
B. 1TB
C. 1.5TB
D. 2TB
E. 4TB
【多选题】
Which three connection types are available when configuring a vSwitch in the vSphere Web Client? (Choose three.)___
A. VMkernel Network Adapter
B. Physical Network Adapter
C. Virtual Machine Port Group for a Standard Switch
D. vMotion Network Adapter
E. vSAN Network Adapter
【多选题】
Which three features can be enabled for a new host cluster? (Choose three.)___
A. Storage Distributed Resource Scheduling
B. High Availability
C. Fault Tolerance
D. Distributed Resource Scheduling
E. Virtual SAN
【多选题】
An administrator receives a report that no real time statistics are available for a virtual machine in the vCenter Server inventory. Which two statements indicate likely causes of the problem? (Choose two.)___
A. The virtual machine is powered off.
B. The host containing the virtual machine is disconnected from vCenter Server.
C. There is insufficient real time data to display the information.
D. The vCenter Server service is not running.
【多选题】
Your manager has given you a bash script that retrieves data for ESXi 6.x host configurations. This data needs to be collected right after the installation of a host and must be run directly on the host. Which two actions can be used to run this script on an ESXi host? (Choose two.)___
A. Connect to the host with Ruby vSphere Console and run the script from there.
B. Enable SSH access from the Direct Console User Interface.
C. Enable the ESXi Shell from the
D. irect Console User Interface.
【多选题】
Which two are true about the Risk badge in vRealize Operations? (Choose two.)___
A. The Risk badge indicates potential future problems that may degrade the performance of the system.
B. Risks may require attention in the near future.
C. The Risk badge indicates problems that are degrading performance of the system.
D. Risks require attention now to correct system performance problems.
【多选题】
vSphere Update Manager allows which two virtual machine attributes to be upgraded? (Choose two.)___
A. Virtual machine firewall policies for NSX.
B. Software Packages in the virtual machine.
C. Virtual machine Hardware Version.
D. VMware Tools Upgrade.
【多选题】
What are two benefits of using NFS 4.1 with vSphere 6.x as compared to NFS 3? (Choose two.)___
A. NFS 4.1 supports Kerberos Authentication
B. NFS 4.1 supports multipathing
C. NFS 4.1 supports IPv6
D. NFS 4.1 supports hardware acceleration
【多选题】
Which three statements are true regarding Fault Tolerance? (Choose three.)___
A. Applications need to be continuously available to users.
B. Applications without native clustering capabilities can be protected.
C. Custom clustering solutions are complicated to configure and maintain.
D. Applications that have 16 vCPUs are supported.
E. Prevents application crashes by analyzing the workload and correcting problems.
【多选题】
Which two statements are true regarding VMware vSphere Flash Read Cache (vFRC)? (Choose two.)___
A. Cache fills and cache evictions happen in the granularity of a cache block size.
B. vFRC caches data from both read and write I/Os, but write I/Os are always serviced by the underlying storage.
C. vFRC caches data from both read and write I/Os, but write I/Os are always serviced by the underlying cache data.
D. Cache fills and cache evictions happen in the granularity of the disk block size.
【多选题】
What are two possible causes of Storage Distributed Resource Scheduler (SDRS) being disabled on one or more virtual machine disks in a datastore cluster? (Choose two.)___
A. The virtual machine has vSphere Fault Tolerance disabled.
B. The virtual machine is a template.
C. The virtual machine swap file is on a shared datastore.
D. The disk is a CD-ROM/ISO file.
【多选题】
An administrator attempts to install vCenter Single Sign-On Server. The installer returns an error message indicating that the installation failed. Prior to the installation, all setup prerequisites were met. The administrator has generated a vCenter Server Single Sign-On support bundle. Which two files should the administrator analyze to determine the cause of the failure? (Choose two.)___
A. Server\utils\logs\imsTrace.log
B. Server\utils\logs\install.txt
C. %TEMP%\utils\logs\vminst.log
D. %TEMP%\vminst.log
【多选题】
An administrator is unable to remove an ESXi 6.x host from a vSphere Distributed Switch. What are two likely reasons for this issue? (Choose two.)___
A. Vmkernel interfaces on the switch are still in use.
B. VM Network port group adapters are connected to different switch.
C. Physical NICs are migrated to different switch.
D. VM Network adapters are connected to this switch.
【多选题】
Which two Identity Sources are available to add for vCenter Single Sign-On authentication? (Choose two.)___
A. LocalOS
B. OpenLDAP
C. NIS as an LDAP Server
D. VCMSDS
【多选题】
What are three goals of resource management within a cluster? (Choose three.)___
A. To prevent virtual machines from monopolizing resources and to guarantee predictable service rates.
B. To exploit undercommitted resources and overcommit with graceful degradation.
C. To provide solutions to potential problems that you might encounter when using vCenter Server.
D. To control the relative importance of virtual machines and provide flexible dynamic partitioning.
E. To provide additional network administration capabilities.
【多选题】
Which three actions can be taken as a result of executing the vSphere Update Manager 6.x scan and remediation wizards? (Choose three.)___
A. Install and upgrade software in virtual machines.
B. Upgrade the firmware on ESXi host devices.
C. Upgrade and Patch ESXi hosts.
D. Install and update third-party software on hosts.
E. Upgrade virtual machine hardware.
【多选题】
Which two statements are true about deploying and using vSphere Replication? (Choose two.)___
A. ESXi hosts managed by a single vCenter Server instance require a connection between the two vSphere Replication appliances.
B. Sites managed by different vCenter Server instances require a connection between the two vSphere Replication appliances.
C. Sites managed by different vCenter Server instances require the use of Site Recovery Manager and a connection between the two vSphere Replication appliances.
D. ESXi hosts managed by a single vCenter Server instance require a single vSphere Replication appliance.
【多选题】
An administrator is attempting to power on a virtual machine, but the task is hanging at 95%. What three scenarios best explain why this problem is happening? (Choose three.)___
A. A virtual machine question is currently being posed to the administrator.
B. Another task for the virtual machine or other component is already in progress.
C. The VMware High Availability cluster has insufficient resources to guarantee failover.
D. The host has lost access to the storage device containing the virtual machine files.
E. The host is under resource contention and unable to power on the virtual machine.
【多选题】
Which three features are not supported when using Fault Tolerance in vSphere 6.x? (Choose three.)___
A. Virtual Volumes (VVOLS)
B. Storage vMotion
C. Virtual Machine Component Protection
D. vMotion
E. vSphere Distributed Switches
【多选题】
Which two storage controller configurations can be used with Virtual SAN? (Choose two.)___
A. SAS controllers in Passthrough mode
B. SAS controllers in RAID0 mode
C. SAS controllers in RAID1 mode
D. SAS controllers in RAID10 mode
【多选题】
Which three are requirements when using vMotion to move a virtual machine across vCenter Server systems? (Choose three.)___
A. Both vCenter Servers must be using Enhanced Linked Mode.
B. Both vCenter Servers must be in the same Single Sign-On Domain.
C. Time must be synchronized.
D. Duplicate VM MAC addresses must be configured.
E. Both vCenter Servers must have High Availability enabled on source and destination clusters.
【多选题】
Which two components can be used when configuring Enhanced Linked Mode? (Choose two.)___
A. vCenter Server Appliance
B. vRealize Operations Manager
C. vSphere Management Appliance
D. vCenter Server for Windows
【多选题】
An organization has a number of virtual machines that would benefit from Fault Tolerance. These include: <A single vCPU Apache Server> < A dual vCPU vCenter Server> < A quad vCPU SQL Server> <An eight vCPU Hadoop Server>. Which two virtual machines can be configured to use VMware Fault Tolerance? (Choose two.)___
A. Apache Server
B. vCenter Server
C. SQL Server
D. Hadoop Server
【多选题】
Which two badges are major badges in vRealize Operations? (Choose two.)___
A. Risk
B. Efficency
C. Workload
D. Faults
【多选题】
An administrator is deploying multiple Windows 2003 Virtual Machines from the same template. What two steps should be taken to avoid network conflicts? (Choose two.)___
A. Customize the guest operating system.
B. Install VMware Tools into the new virtual machines.
C. Copy the Microsoft Sysprep tools onto the vCenter Server system.
D. Ensure the e1000 vmnic is selected for each new virtual machine.
【多选题】
Which three conditions would prevent Storage I/O Control from being enabled on a group of datastores? (Choose three.)___
A. The datastores planned for the solution are used by different vSphere clusters.
B. A datastore planned for the solution is configured as a Raw Device Mapping file.
C. A datastore planned for the solution has three extents.
D. A datastore planned for the solution is configured as NFS.
E. The organization has an Enterprise license.
【多选题】
Which two actions are prerequisites to adding ESXi 6.x hosts to a vSphere Distributed Switch? (Choose two.)___
A. Verify that there is at least one Distributed Port Group on the Distributed Switch.
B. Verify that the Distributed Port Group have active uplinks configured in its teaming and failover policy.
C. Verify that the
D. istributed Switch has been configured with a Network Profile.
【多选题】
An organization has configured Distributed Power Management (DPM) on a vSphere 6 cluster. The organization wants to be alerted when an ESXi host has been powered down by DPM. Which two options represent the type and name of the alarm that would accomplish this? (Choose two.)___
A. DrsEnteringStandbyModeEvent
B. DrsEnteredStandbyModeEvent
C. Event-based
D. Condition-based
【多选题】
Which two allow for the disabling of Network Rollback operations? (Choose two.)___
A. Modifying the vpxd advanded configuration options and adding the config.vpxd.network.rollback key
B. Modifying the C:\ProgramData\VMware\CIS\cfg\vmware-vpx\vpxd.cfg file and adjusting the<rollback> xml tag
C. Modifying the C:\ProgramData\VMware\CIS\cfg\vmware-vpx\vpxd.cfg file and adjusting the <networkrollback> xml tag
D. Modifying the C:\ProgramData\VMware\CIS\cfg\vmware-vpx\firstboot\vpxd-service- spec.prop file and adjusting the <rollback> xml tag
