【单选题】
第1606題:下列密封属于静密封的是___密封。
A. 垫片
B. 填料
C. 机械
查看试卷,进入试卷练习
微信扫一扫,开始刷题
答案
A
解析
暂无解析
相关试题
【单选题】
第1607题:油脂滴落于高温暖气片上发生燃烧属于___。
A. 闪燃
B. 受热自燃
C. 自热自燃
【单选题】
第1608题:属于气体物质的是___。
A. 氯气
B. 烟气
C. 盐酸雾滴
【单选题】
第1609题:没有建立专职应急救援队的危险化学品企业必须与邻近的具备相应能力的专业救援队签订应急___。
A. 意向书
B. 合同
C. 救援协议
【单选题】
第1610题:在易燃易爆场所穿___最危险。
A. 胶鞋
B. 布鞋
C. 带铁钉鞋
【单选题】
第1611题:压力容器按用途分类时,用于介质压力平衡、缓冲、净化和分寓的设备属于___设备。
A. 换热
B. 反应
C. 分离
【单选题】
第1612题:硫化氢工作场所每___至少进行一次作业环境职业病危害因素监测。
A. 月
B. 季度
C. 半年
【单选题】
第1613题:生产装置采样口、均应设置集中回收样品的设施.采样时废物料不应排入___。
A. 下水道
B. 接油桶
C. 回收罐
【单选题】
第1614题:禁止标志的基本形式是带斜杠的___。
A. 正三角边框
B. 圆边框
C. 方边框
【单选题】
第1615题:高压容器的代号是___。
A. M
B. L
C. H
【单选题】
第1616题:国家对严重污染大气环境的落后生产工艺和设备实行___。
A. 淘汰制度
B. 技术改造
C. 修复利用
【单选题】
第1617题:应急预案评审应当形成___并附有专家名单。
A. 意见记录
B. 专家个人意见
C. 书面纪要
【单选题】
第1618题:急冷锅炉的水力清焦属于裂解炉的___内容。
A. 中修
B. 大修
C. 小修
【单选题】
第1619题:保证火炬正常使用的附件中,___不是保证火炬点燃的装置。
A. 常明灯
B. 消防蒸汽
C. 爆燃线
【单选题】
第1620题:___具有浮头式换热器的优点,又克服了固定式换热器的缺点。结构较浮头简单、制造简便、易于检修清洗。
A. 填料函式换热器
B. 螺旋折流板换热器
C. 管壳式换热器
【单选题】
第1621題:乙烯装置消防栓应按建筑防火规范设定:通常消防栓端口压力应高于___MpA
A. 0.3
B. 0.35
C. 0.5
【单选题】
第1622題:离心泵在启动前未充满液体,泵壳内存在空气,吸入口处形成的负压不足以将液体吸入泵内,泵虽启动但不能输送液体的现象称为___。
A. 汽蚀
B. 气缚
C. 喘振
【单选题】
第1623题:除所有大中型危险化学品企业外,不具备建立专职救援队条件的其他危险化学品企业、必须建立___救援队。
A. 专业应急
B. 兼职
C. 志愿
【单选题】
第1624:设备密封泄露属于___排放。
A. 低点
B. 有组织
C. 无组织
【单选题】
第1625题:含有或直接沾染危险废物的弃包装物、容器、清洗杂物为___。
A. 废包装物
B. 一般废物
C. 危险废物
【单选题】
第1626题:离心压缩机转速越高,防喘振流量越___。
A. 小
B. 不确定
C. 大
【单选题】
第1627题:压力表的量程应为工作压力的___倍。
A. 1.1-1.5
B. 1.5-2
C. 2-2.5
【单选题】
第1628题:正在运行的裂解炉,汽包遇到___情况是不需要立即停炉处理
A. 汽包液位低
B. 汽包压力指示异常
C. 汽包液位指示失灵
【单选题】
第1629題:存放危险废物的场所必须设置___。
A. 放置说明
B. 照明
C. 危险废物标志
【单选题】
第1630题:螺杆泵启动时A( )将出口阀关死,___用出口阀调节流量。
A. 不能、不能
B. 不能、能
C. 能、能
【单选题】
第1631题:裂解炉点火前测爆时,可燃气体浓度小于___%、测爆合格。
A. 0.4
B. 0.2
C. 0.5
【单选题】
第1632题:乙烷原料中硫含量过低,其结果可能是___。
A. 可抑制炉管的渗碳
B. 裂解反应中生成的一氧化碳减少
C. 甲烷化反应器飞温
【单选题】
第1633题:安全生产五要素是指___,
A. 人、物、能量、信息、设备
B. 人、机、环境、管理、信息
C. 安全文化、安全法制、安全责任、安全科技、安全投入
【单选题】
第1634题:密封油泵的水压试验保压时间至少___min。
A. 30
B. 20
C. 10
【单选题】
第1635题:现场处置方案应当包括危险性分析、可能发生的事故特征、应急处置程序、应急处置要点和___等内容。
A. 附件
B. 注意事项
C. 应急保障
【单选题】
第1636题:有组织排放污染物浓度可以比无组织排放浓度___。
A. 高
B. 相同
C. 低
【单选题】
第1637题:进入塔器内作业时,有机物含量应小于___%。
A. 0.1
B. 0.2
C. 0.5
【单选题】
第1638题:下列___属于易燃气体。
A. 二氧化碳
B. 乙炔
C. 氧气
【单选题】
第1639題:不能用于擦洗设备的是___。
A. 洗衣粉
B. 肥皂
C. 汽油
【单选题】
第1641題:关于乙烯装置设备的防腐措施,说法错误的是___。
A. 脱盐可以脱除介质中腐蚀的有害物质
B. 设备内加衬里是电化学保护
C. 使用中和剂的机理是中和
【单选题】
第1642题:下列个选项中,可能导致热电偶温度计故障的有___。
A. 进行了冷端补偿
B. 在回路中接入了第三种材料
C. 热电偶材质选用不当
【单选题】
第1643题:压缩机检修后,进行空试前必须保证___工作正常,防止磨损压缩机轴瓦。
A. 调速系统
B. 润滑油系统
C. 工艺联锁系统
【单选题】
第1644题:硫化氢主要损害___、呼吸系统刺激黏膜。
A. 消化系统
B. 造血系统
C. 中枢神经
【单选题】
第1645题:对于容易产生静电的设备、管道及构架等,所有这些静电接地设施必须保持完整无损,定期测定电阻值,其 电阻值要求不大于___Ω。
A. 50
B. 100
C. 150
【单选题】
第1646题:编制防震减灾___,应当遵循统筹安排、突出重点、合理布局、全面预防的原则,以震情和震害预测结果为依据,并充分考虑人民生命和财产安全及经济社会发展、资源环境保护等需要。
A. 预案
B. 规划
C. 总结
【单选题】
第1647题:化学泡沫灭火原理主要是___作用。
A. 隔离与窒息
B. 降温
C. 化学抑制
推荐试题
【单选题】
An administrator is attempting to enable Storage I/O Control on a datastore, but it is failing. What is the likely reason for this failure? ___
A. The host is connected to a datastore is running on ESX 4.0.
B. The host is connected to a Fibre Channel storage array.
C. The datastore has multiple extents.
D. The datastore is managed by a single vCenter Server.
【单选题】
A mission-critical virtual machine built on vSphere 4.1 needs to be moved to an ESXi 6.x host.Which virtual hardware version is needed to move the virtual machine without upgrading? ___
A. 6
B. 7
C. 10
D. 11
【单选题】
An administrator is analyzing a virtual machine as shown in the Exhibit. What is the current long term risk for this virtual machine? ___
A. The virtual machine may run out of memory before April 27.
B. The virtual machine may continue to function after April 27.
C. The virtual machine has adequate memory configured for operation for the next 120 days.
D. The virtual machine has adequate memory reservation configured for operation for the next 120 days.
【单选题】
An administrator is monitoring a High Availability (HA) and Distributed Resource Scheduler (DRS) enabled cluster and has noticed that virtual machines in the cluster are being migrated without user intervention. Why is this happening? ___
A. The DRS Automation level is set to Fully Automated.
B. The Automation level is set to Automatic.
C. The
D. PM Threshold is set to Aggressive.
【单选题】
An administrator attempts to migrate a suspended virtual machine to a newly deployed vSphere 6.x cluster. The compatibility check fails. What condition could cause this behavior?___
A. The new vSphere 6.x cluster is running Intel CPUs instead of AMD CPUs.
B. A suspended virtual machine cannot be migrated.
C. The hardware virtualization feature of the CPU is not enabled on the new hosts.
D. A vSphere Distributed Switch is required to migrate a suspended virtual machine.
【单选题】
A vSphere administrator has been using vSphere in evaluation mode and now wants to deploy an environment that provides the same features. Which edition of vSphere provides similar functionality to evaluation mode? ___
A. Enterprise Plus
B. Enterprise
C. Standard
D. Essentials
【单选题】
A vSphere administrator has been using vSphere in evaluation mode and now wants to deploy an environment that provides the same features. Which edition of vSphere provides similar functionality to evaluation mode? ___
A. Enterprise Plus
B. Enterprise
C. Standard
D. Essentials
【单选题】
An administrator has just configured the IP address on an ESXi host from the Direct Console User Interface. How can the configuration be validated as correct without any additional tools?___
A. Add the host to vCenter Server and if it works, then all networking settings are ok.
B. Select the Test Management Network option from the DCUI.
C. Connect to the host with the vSphere Client and click the Test Network option.
D. Use PowerCLI to connect to the host and initiate a network test.
【单选题】
An administrator is installing vCenter Server for an environment that has 40 ESXi 6.x Hosts and 150 virtual machines. Which database would meet the minimal requirements needed for this task? ___
A. vFabric Postgres
B. Microsoft SQL Express 2008
C. Microsoft SQL Server 2014
D. Oracle 11g
【单选题】
What is a requirement when enabling a Virtual SAN cluster in an existing High Availability (HA) and Distributed Resource Scheduler (DRS) Cluster? ___
A. Disable DRS and HA before enabling Virtual SAN
B. Enable DRS before enabling Virtual SAN
C. Disable HA before enabling Virtual SAN
D. Enable Storage DRS before enabling Virtual SAN
【单选题】
The vSphere administrator attempts to connect to an ESXi host via an SSH client and receives the following security alert: The vSphere administrator needs to determine whether the RSA key fingerprint shown in the security alert is the fingerprint of the intended ESXi host. Which tool should the vSphere administrator use? ___
A. Direct Console User Interface
B. vSphere Client
C. vSphere Web Client
D. vSphere Management Assistant
【单选题】
An administrator needs to monitor traffic on vSwitches in a vSphere 6.x environment. Which option, if configured, would accomplish this task? ___
A. Forged Transmits
B. MAC Address Changes
C. Promiscuous Mode
D. Notify Switches
【单选题】
What is true regarding datastores on ESXi 6.x? ___
A. NFS 4.1 datastore does not support Fault Tolerance (FT)
B. VMFS3 and VMFS5 datastores can be newly created
C. NFS datastore can be concurrently mounted using NFS 4.1 on one host and NFS on another
D. NFS 3.0 datastore does not support Fault Tolerance (FT)
【单选题】
An administrator is cloning and configuring five new web server virtual machines. What would be the benefit of configuring resource shares for the new VMs? ___
A. To prioritize access to a resource during contention.
B. To guarantee access to a resource during contention.
C. To prioritize access to a resource before contention occurs.
D. To guarantee access to a resource before contention occurs.
【单选题】
An administrator logs into the vSphere Web Client and sees the warning shown in the Exhibit. During a change control window, the warning was addressed. What should be done to verify that the host is no longer showing the warning? ___
A. Run a Remediate host operation.
B. Recheck the compliance of the host.
C. Restart the host to get rid of the warning.
D. Install VMware tools to clear the warning.
【单选题】
A vApp named Sales has a Memory Limit of 32 GB and a CPU Limit of 12,000 MHz. There are three virtual machines within the vApp: <Sales-DB -- Has a memory reservation of 20 GB. > <Sales-DC -- Has a memory reservation of 8 GB. > <Sales-Web -- Has a memory reservation of 8 GB.> Which statement is correct? ___
A. All three virtual machines can power on, but will have memory contention.
B. All three virtual machines can power on without memory contention.
C. Only two of the three virtual machines can power on.
D. Only one of the virtual machines can power on.
【单选题】
You are editing the management network configuration of an ESXi 6.x Host from the vSphere Web Client. You mistakenly put the incorrect VLAN in place for the management network. What action do you need to take to correct this? ___
A. You need to manually edit the configuration on the host with command line utilities.
B. No action is required. By default ESXi rolls back configuration changes that disconnect the host.
C. The ESXi host system configuration will need to be restored to the factory configuration to fix the issue.
D. The change can be reverted in the vSphere Web Client by simply editing the switch again.
【单选题】
What is true about resource pools created on a Distributed Resource Scheduler (DRS) cluster?___
A. A root resource pool is created with the specified values.
B. A root resource pool is automatically created using the aggregate total of the ESXi host resources in the cluster.
C. A root resource pool is automatically created using the aggregate total of all resources in the datacenter.
D. A root resource pool is not needed when creating resource pools on a DRS cluster.
【单选题】
An administrator attempts to enable Enhanced vMotion Compatibility (EVC) on a cluster. The operation results in a compatibility error, as shown in the exhibit. What is the likely cause of this error? ___
A. The CPUs in the ESXi host are not AMD CPUs.
B. The CPUs in the ESXi host do not support hardware virtualization capabilities.
C. The XD/NX CPU features have not been enabled in the BIOS of the server.
D. There is no shared storage between the hosts in the cluster.
【单选题】
What condition would prevent an administrator from creating a new VMFS3 datastore on an ESXi 6.x host using the vSphere Web Client? ___
A. A VMFS3 datastore cannot be created on an ESXi 6.x host.
B. The VMFS3 kernel module is not loaded.
C. A VMFS3 datastore cannot be mounted on an ESXi 6.x host.
D. VMFS3 datastores are not compatible with virtual machines created on an
E. SXi 6.x host.
【单选题】
During a new vSphere Distributed Switch configuration, where does the Maximum Transmission Unit (MTU) value get modified? ___
A. Uplink Settings
B. Switch Settings
C. Portgroup Settings
D. NIC Teaming Settings
【单选题】
A small company wants to use VMware products for its production systems. The system administrator needs to recommend a solution that will deliver High Availability to the company's production applications. What is minimum vSphere offering that will support this requirement? ___
A. vSphere Essentials
B. vSphere Essentials Plus
C. vSphere Hypervisor
D. vSphere Standard
【单选题】
Which scenario shows a reason for VMware Tools failing to install? ___
A. Virtual machine has a CD-ROM configured.
B. Guest OS Antivirus is blocking the VMware Tools installation.
C. Guest OS has 64-bit ldd (list dynamic dependencies) utility installed.
D. Virtual machine is powered on.
【单选题】
An administrator is configuring an ESXi 6.x host to use multiple NICs to resolve a management network redundancy error. After configuring a second NIC, the server is not able to communicate when the primary connection is taken down. The administrator analyzes the Exhibit shown here. Based on the exhibit, what is the likely cause of the issue? ___
A. vmnic4 is not attached to a vSwitch.
B. vmnic2 is not connected to a physical switch.
C. E1000 is the incorrect NIC
D. river for this card.
【单选题】
What information is required as part of an interactive ESXi 6.x installation? ___
A. Keyboard layout
B. IP Address
C. Root password
D. DNS information
【单选题】
What is the default load balancing policy for a newly created VMkernel port on a vSphere Distributed Switch? ___
A. Route based on orginating virtual port ID
B. Route based on IP Hash
C. Route based on source mac address
D. Route based on physical NIC load
【单选题】
An administrator deploys vCenter Server using the embedded Platform Services Controller. After testing the deployment for a couple of months, it is determined that the environment would be better served with an external Platform Services Controller. What should the administrator do to meet this new requirement? ___
A. Deploy a fresh instance of vCenter Server with an external Platform Services Controller.
B. Perform a fresh install of an external Platform Services Controller.
C. Migrate the embedded Platform Services Controller to an external Platform Services Controller.
D. Upgrade the embedded Platform Services Controller to an external Platform Services Controller.
【单选题】
Why are some virtual machines orphaned after rebooting a High Availability (HA) enabled host? ___
A. The Orphaned virtual machines have HA restart disabled.
B. The Orphaned virtual machines moved recently and the change did not persist.
C. The host is attached to failed storage.
D. The host just came out of maintenance mode.
【单选题】
Which vSphere 6 Standard Edition feature will allow an organization to ensure that critical multi-threaded applications have the maximum possible uptime? ___
A. Fault Tolerance
B. High Availability
C. Distributed Resource Scheduler
D. App HA
【多选题】
An application running in a virtual machine is experiencing performance issues. When utilizing performance monitoring utilities, it is noted that the CPU Utilization of the application is at 100%. Which two scenarios are probable causes of the CPU contention for the application? (Choose two.)___
A. There is a network I/O constraint.
B. There is a storage I/O constraint.
C. There is insufficient disk space assigned to the virtual machine.
D. The application is not virtualization aware.
【多选题】
A Fault Tolerance (FT) virtual machine with four vCPUs is experiencing high latency when performing ICMP and Application tests. What are three potential causes that may be attributing to this latency? (Choose three.)___
A. The FT network has insufficient bandwidth and is running on a 1GB Link.
B. The FT network is on a particularly high latency link.
C. The FT network has been configured with Network I/O Control.
D. The FT virtual machine is running an e1000 network adapter.
E. The
F. T virtual machine is running on poor performing network-based storage.
【多选题】
A virtual machine is experiencing performance issues. The following performance metrics are observed: <CPU usage value for the virtual machine is above 90%> < CPU ready value for the virtual machine is above 20%> Which two activities will likely resolve the performance issues? (Choose two.)___
A. Set a CPU reservation for the virtual machine.
B. Increase the CPU limit on the virtual machine.
C. Decrease CPU shares equally for all virtual machines on the host.
D. Increase CPU shares equally for all virtual machines on the host.
【多选题】
An administrator is upgrading a vSphere Distributed Switch. The existing switch is version 6.0 and the administrator wants to upgrade to the latest version possible. The environment contains several ESXi 6.1 hosts. Which two options are available to ensure that the upgraded switch will be compatible with these hosts? (Choose two.)___
A. Upgrade the vSphere Distributed Switch to 6.0
B. Upgrade the ESXi 5.5 hosts to version 6.0, then upgrade the vSphere Distributed Switch to 5.5
C. Upgrade the vSphere Distributed Switch to 5.1
D. Upgrade the
E. SXi host switches to 5.5, then upgrade the vSphere Distributed Switch to 5.5
【多选题】
An administrator attempts to create a Thick Provisioned Virtual Disk (VMDK) on an NFS datastore; but it fails. Which two reasons would explain the failure? (Choose two.)___
A. Datastore is on an NFS 3 storage server that does not support Hardware Acceleration
B. Datastore is on an NFS 4.1 storage server
C. Only VMFS datastores support "Thick Provisioned" VMDK
D. The NFS datastore was not created on a "Thick Provisioned" device
【多选题】
Which two NFS Protocol versions does vSphere 6 support? (Choose two.)___
A. Version 3
B. Version 3.1
C. Version 4
D. Version 4.1
【多选题】
Which three operations occur during a cold migration of a virtual machine? (Choose three.)___
A. The virtual machine disks are moved if the datastore is being changed.
B. The virtual machine is registered with the destination server.
C. The source virtual machine is removed from the old hosts.
D. The virtual machine hardware is upgraded.
E. The virtual machine files are quiesced prior to the migration.
【多选题】
A 4 GB Memory virtual machine is experiencing extended memory issues, as shown in the Exhibit. What potential issues could be attributed to this memory pressure?___
A. A limit is imposed on the virtual memory of this virtual machine.
B. The Balloon driver has been uninstalled.
C. A limit has been imposed on the Virtual CPU of the virtual machine.
D. Storage IO control has been enabled for the virtual machine causing the swapped memory.
【多选题】
You are creating a virtual machine in the Web Client using the New Virtual Machine wizard. Which two steps are required? (Choose two.)___
A. Select a valid name.
B. Select a cluster for the compute resource.
C. Select a network adapter.
D. Select the virtual machine compatibility.
【多选题】
An administrator has been given requirements to configure vMotion for a new virtual machine. The configuration should: <Provide Network Redundancy Use VLAN 550> <Be secured against anyone trying to spoof communication The vSwitch1 configuration is shown in the Exhibit.> Which three changes should be made to meet the stated requirements? (Choose three.)___
A. The VLAN ID must be set appropriately.
B. The default values for MAC Address Changes and Forged Transmits must be altered.
C. The teaming and failover adapters must be set appropriately.
D. The Traffic Shaping configuration must be altered.
E. The Load Balancing Policy must be set appropriately.
【多选题】
Which three traffic types are available services options when configuring a vmkernel port? (Choose three.)___
A. Provisioning Traffic
B. Virtual Volumes Traffic
C. vSphere Replication NFC Traffic
D. Virtual SAN Traffic
E. FCoE Traffic