【多选题】
关于C-650系统开车过程的巡检内容，下列说法正确的是___。
A. 油路系统是否正常
B. 工艺系统是否正常
C. 油密封系统是否正常
D. 干气密封系统是否正常
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相关试题
【多选题】
属于C-600冷剂级别的是___。
A. -65℃
B. -83℃
C. -90℃
D. -101℃
【多选题】
关于C-600防喘振线说法正确的有___。
A. 四返四
B. 四返三
C. 四返二
D. 四返一
【多选题】
C-600压缩机开车前应做___试验。
A. 复水联锁
B. 真空联锁
C. 油路联锁
D. 超速联锁
【多选题】
开式热泵开车前实气置换不合格,会造成___。
A. 精馏塔塔釜无法建立液位
B. 机组排出温度过高
C. 机组排出压力过高
D. 精馏塔进料中断
【多选题】
冷却水参数变化时，压缩岗位受影响的有___。
A. C-300压缩机系统的段间温度
B. C-300/650透平复水凝液温度
C. C-650压缩机出口冷凝器后温度
D. 压缩机油路油温
【多选题】
关于冷却水参数变化对系统的影响,下列说法正确的有___。
A. 冷却水给水温度变高，对系统的冷却能力变小
B. 冷却水给水压力变高，对系统的冷却能力变大
C. 冷却水给水温度低，对系统的冷却能力变小
D. 冷却水给水压力变低，对系统的冷却能力变大
【多选题】
V-310液位高，下列处理措施正确的有___。
A. 开液位控制调节阀旁路手阀
B. 启动备用泵
C. 提高C-300T转速
D. 排地罐
【多选题】
裂解气采用五段压缩时，关于压力对碱洗的影响，下列说法正确的有___。
A. 提高压力有利于CO2和H2S的吸收
B. 压力高不利于CO2和H2S的吸收
C. 压力过高会使裂解气中的重烃的露点升高，凝液增加
D. 提高操作压力会增加设备投资
【多选题】
V-355A/B切换过程步骤有___。
【多选题】
V-370A/B再生步骤包括___。
A. 升温
B. 降温
C. 冷吹
D. RG充压
【多选题】
干燥器再生过程中，会对燃料气系统产生影响的动作有___。
A. 冷吹之前干燥器压力与燃料气压力不平衡
B. 冷吹速度太快
C. 升温速度太快
D. 降温速度太快
【多选题】
C-650四段排出温度高，处理措施正确的有___。
A. 提高压缩机转速
B. 开大E-699冷却水出口手阀
C. 联系调度降循环水温度
D. 装置降负荷
【多选题】
甲醇的解冻机理是根据___。
A. 甲醇的凝固点较低
B. 其水合物的冰点较低
C. 与水相溶
D. 易燃易挥发
【多选题】
T-470注甲醇需要注意的事项有___。
A. 甲醇注入越多越好
B. 注甲醇时要注意个人防护避免直接接触甲醇
C. 避免满塔时注甲醇
D. 注甲醇后要及时在塔釜排甲醇
【多选题】
关于润滑油对压缩机的影响，下列说法正确的有___。
A. 油量不足或中断会引起轴承温度升高，使轴承产生咬合，严重的使巴氏合金溶化
B. 油不清洁会使轴瓦刮伤
C. 油温过高，轴承的热量不能及时带走
D. 油中带水会降低油的润滑性能
【多选题】
关于润滑油温度高对压缩机的影响，下列说法正确的有___。
A. 润滑油的粘度下降
B. 轴承的热量不能及时被带走
C. 在轴瓦内不能形成良好的润滑油膜
D. 润滑油气化
【多选题】
分析C-650润滑油温高的原因___。
A. 油泵透平转速过高
B. 油冷器结垢，换热效果不好
C. 冷却水量不够
D. 装置负荷太高
【多选题】
C-300润滑油温度高处理措施正确的是___。
A. 开大油冷器冷却水阀
B. 降低油路小透平转速
C. 切换油过滤器
D. 联系调度降低循环冷却水温度
【多选题】
润滑油过滤器压差大的原因有___。
A. 润滑油温度高
B. 油泵转速高
C. 油过滤器过滤网堵
D. 油过滤器压差指示表故障偏高
【多选题】
C-300油路系统根据用途可为压缩机提供___。
A. 润滑油
B. 调速油
C. 防锈油
D. 密封油
【多选题】
油箱油位降低的原因有___。
A. 油冷却器内漏
B. 油气压差小
C. 油气分离器带油
D. 油路管线漏油
【多选题】
密封油系统主要由___几个部分组成。
A. 迷宫密封
B. 脱气罐
C. 油气分离器
D. 密封油高位槽
【多选题】
日常巡检压缩机房时，应检查___。
A. 密封油液位，润滑油和调速油压力
B. 润滑油回油温度
C. 油气压差、气气压差
D. 调速油过滤器压差
【多选题】
压缩机正常停车的原则是___。
A. 安全
B. 环保
C. 节约
D. 尽快停完
【多选题】
乙烯机停车之前的操作有___。
A. 提高透平转速
B. 降低各冷剂用户液面
C. 开大各个防喘振阀
D. 乙烯机降低负荷
【多选题】
裂解气压缩机停车后，下列做法不正确的是___。
A. 制冷压缩机低负荷运行
B. 关闭所有分离冷剂用户
C. 打开制冷压缩机的返回阀，防止喘振
D. 制冷压缩机喷淋阀全关，以免吸入罐起液面
【多选题】
裂解气压缩机正常停车前的准备工作有___。
A. 降低各塔罐的液位
B. 关闭各尾气返回
C. 调整各个返回线阀
D. 炉区降负荷
【多选题】
碱洗塔在停车后、交出检修前，应做的工作有___。
A. 物料倒空干净、彻底、氮气置换合格
B. 塔蒸煮合格
C. 碱洗塔所有盲板加装完毕
D. 塔中、下人孔鼓风机投入运行，塔的上、中、下人孔氧含量及有机物分析均达标
【多选题】
在乙烯制冷系统与乙烯精馏塔组成的开式热泵系统中，乙烯机停车之前的操作有___。
A. 停止乙烯精馏塔回流
B. 降低各换热器液面
C. 停乙烯产品采出
D. 乙烯机降低负荷
【多选题】
开式热泵系统停车的注意事项有___。
A. 冷排放加热系统已正常投用，火炬系统正常，罐区已具备接受各类不合格产品条件
B. N2供应量充足，公用工程，水、电、汽、消防系统正常，现场照明正常
C. 排液，泄压都要遵循先高压后低压的原则，防止物料互窜
D. N2置换时要确保系统压力低于N2管网压力时才能引进N2
【多选题】
开式热泵停车时，下列操作正确的有___。
A. 用户不投用
B. 出口冷凝器尽量使用
C. 停用冷回流
D. 当吸入温度上升快时，开喷淋要果断
【多选题】
离心式压缩机紧急停车后，仍正常运行的有。___
A. 复水系统
B. 干气密封系统
C. 润滑油系统
D. 盘车系统
【多选题】
油系统储压器作用。___
A. 能缓冲油系统油压变化幅度
B. 主油泵跳、辅油泵自启时，保证油压高于联锁值
C. 当润滑油压力低时可以长时间向润滑油总管供油
D. 当密封油液位低时可以向密封油高位油槽供油
【多选题】
C-300油路辅油泵自启动，可能原因有。___
A. 润滑油压力低
B. 密封油高位油槽液位低
C. 调速油压力低
D. 润滑油回油温度低
【多选题】
润滑油箱液位下降的处理方法，下列选项正确的有。___
A. 加注润滑油
B. 检查润滑油是否向外泄漏
C. 检查密封油是否向机体泄漏
D. 检查油气分离器气相是否带油
【多选题】
密封油系统主要由___几个部分组成。
A. 迷宫密封
B. 脱气罐
C. 油气分离器
D. 密封油高位槽
【多选题】
C-300机组密封油通过__和__返回油箱。___
A. 油气分离器
B. 润滑油回油总管
C. 密封油回油总管
D. 调速油回油总管
【多选题】
C-300透平泵C-300-P-IA自启动原因。___
A. LO压力低
B. GO压力低
C. SO高位槽液位低
D. 密封油压力低
【多选题】
对于离心泵而言，改变___可以提高该泵的扬程。
A. 泵的额定转速
B. 叶轮直径
C. 输送流体密度
D. 改变叶片的弯曲程度
【多选题】
下列关于冷泵预冷的说法不正确的是。___
A. 冷泵预冷速度越快越好
B. 冷泵预冷过程中要经常盘车
C. 开车初期，时间来不及，因此冷泵可以不需要预冷
D. 冷泵预冷中，泵体一出现挂霜即预冷结束
推荐试题
【单选题】
An administrator creates an ESXi cluster using vSphere Auto Deploy. The ESXi hosts are configured to get a management IP address from a DHCP server. The administrator needs to troubleshoot the management network on one of the hosts. Which DCUI option should the administrator use to renew the DHCP lease? ___
A. Restart Management Network
B. Restore Network Settings
C. Test Management Network
D. Configure Management Network
【单选题】
An administrator is re-provisioning an ESXi host and moving it to another datacenter. Which DCUI option should the administrator use to revert the system configuration to the default settings? ___
A. Reset System Configuration
B. Rebuild Default System Configuration
C. Revert System Configuration
D. Renew Default System Configuration
【单选题】
An administrator has just completed installing an ESXi 6.x host, but doesn't know what address has been configured. Where is the ESXi host IP address configured? ___
A. RVC console
B. Direct Console User Interface
C. vSphere Web Client
D. vSphere Client
【单选题】
When is it possible to place a VMFS5 datastore in maintenance mode? ___
A. When it is a member of a Storage DRS cluster
B. When it is a member of Virtual SAN cluster
C. When it is a member of a multi-extent datastore
D. When it is a member of a Virtual Volume
【单选题】
Immediately after installing ESXi, an administrator observes that the Configure Lockdown Mode option is grayed out in the Direct Console User Interface (DCUI). What is the most likely explanation? ___
A. The host has not yet been added to a vCenter Server.
B. The BIOS on the host does not have NX/XD enabled.
C. The ESXi host is running in evaluation mode.
D. The host requires a reboot before this feature is available.
【单选题】
Immediately after installing ESXi, an administrator observes that the Configure Lockdown Mode option is grayed out in the Direct Console User Interface (DCUI). What is the most likely explanation? ___
A. The host has not yet been added to a vCenter Server.
B. The BIOS on the host does not have NX/XD enabled.
C. The ESXi host is running in evaluation mode.
D. The host requires a reboot before this feature is available.
【单选题】
Which Single Sign-On deployment mode should an administrator use for two 6.x vCenter Servers configured with linked mode? ___
A. Basic Single Sign-On with vCenter Server Heartbeat
B. Multisite Single Sign-On
C. Basic Single Sign-On
D. Single Sign-On with Linked Mode
【单选题】
What is required when changing a virtual machine name using the vSphere Web Client? ___
A. Verify connectivity to the ESXi host where the virtual machine is running and its inventory list is accessible.
B. Verify in which datastore the virtual machine resides and that you have access and its inventory list is accessible.
C. Verify that virtual machine files are stored in the same datastore and can be accessed in the datastore browser list.
D. Verify the virtual machine is not running in Fault Tolerant mode and that it is not in a Distributed Resource Scheduler cluster.
【单选题】
An administrator deploys vRealize Operations into a vSphere 6.x environment. After the deployment, the administrator notices that badges are not appearing. What is a likely cause of this behavior? ___
A. Badges do not appear until you register vRealize Operations with vCenter Server.
B. Badges do not appear until you register a vCenter Server in vRealize Operations.
C. The vRealize Operations appliance needs to be redeployed.
D. The vCenter Server appliance needs to be redeployed.
【单选题】
How are ports scaled on vSphere Standard Switches (vSS)? ___
A. Ports on a vSS can be dynamically scaled up and down.
B. Ports on a vSS can only be statically scaled up or down.
C. Ports on a vSS can only be dynamically scaled down.
D. Ports on a vSS can only be dynamically scaled up.
【单选题】
A High Availability (HA) cluster is configured to respond to a given number of host failures. The cluster contains virtual machines configured with these settings: VM1 has a 1GHz CPU reservation and no Memory reservation VM2 has a 2GHz CPU reservation and no Memory reservation VM3 has no CPU reservation and no Memory reservation . Given this information, what is the correct slot size for the cluster? ___
A. The CPU Reservation should be set to 32MHz and the memory reservation should be set to 32MB plus memory overhead.
B. The CPU reservation should be set to 1 GHz and the memory reservation should be set to 0MB plus memory overhead.
C. The CPU reservation should be set to 2 GHz, and the memory reservation should be set to 0MB plus the virtual machine memory overhead.
D. The CPU reservation should be set to 2 GHz, and the memory reservation should be set to 32MB, plus the virtual machine memory overhead.
【单选题】
An administrator is planning a vSphere infrastructure with the following specific networking requirements: <The ability to shape inbound (RX) traffic> <Support for Private VLANs (PVLANs)> <Support for LLDP (Link Layer Discovery Protocol)>. What is the minimum vSphere Edition that will support these requirements? ___
A. vSphere Essentials Plus
B. vSphere Standard
C. vSphere Enterprise
D. vSphere
E. nterprise Plus
【单选题】
When you add an ESXi 6.x host to a new Cluster, which vSphere object owns the CPU and Memory resources of the hosts? ___
A. vCenter Server
B. Datacenter
C. Cluster
D. Host
【单选题】
A user is trying to retrieve objects from a SharePoint server and finds the request is taking an excessive amount of time. An administrator tries to isolate the issue and notes the following: Application performance is poor when compared to virtual machines on other hosts. Performance improves when the virtual machine is moved to another host. The virtual machine encounters higher than expected CPU %Ready times. What conclusion can be reached regarding the performance issues for this virtual machine? ___
A. Host Power Management is directly impacting virtual machine performance.
B. The virtual machine has a large number of snapshots.
C. The Path Selection Policy for the storage device is set differently on the affected host.
D. Network I/O control is configured for the portgroup.
【单选题】
A virtual machine template is accidently removed from the vCenter Server Inventory. Which method would be used to recover the template back into the environment?___
A. Use the datastore browser to locate the template, then right click and add the .vmtx file to inventory.
B. Use the datastore browser to locate the template, then right click and add the .vmx file to inventory.
C. Using the Managed Object Browser and adding the template from the ManagedObjectReference:GuestFileManager object.
D. Using the Managed Object Browser and adding the template from the ManagedObjectReference:VirtualDiskManager object.
【单选题】
A vSphere administrator needs to backup a virtual machine that has a Microsoft SQL Server Database installed. Which solution allows for an application quiesce to occur during backup?___
A. VMware vCenter Converter
B. VMware vCenter Site Recovery Manager
C. VMware vSphere Replication
D. VMware vSphere Data Protection Advanced
【单选题】
An administrator is migrating a virtual machine from a Test cluster to a Production cluster. The two environments do not have any shared storage. What is the easiest way to accomplish this task? ___
A. Perform a Storage vMotion.
B. Perform a regular vMotion.
C. Perform a Virtual to Virtual migration.
D. Perform a backup and restore using VMware Data Protection.
【单选题】
An administrator must determine an appropriate backup solution, given these conditions: 50 of the virtual machines are in a resource pool named Finance. 50 of the virtual machines are in a resource pool named QA. Which solution allows an administrator the ability to backup 100 virtual machines? ___
A. Use Snapshot Manager on the vCenter Server to backup the virtual machines.
B. Use the VMware Consolidated Backup (vcb) tool on the ESXi Host to backup the virtual machines.
C. Use the VMware Data Recovery (VDR) Appliance on the vCenter Server to backup the virtual machines.
D. Use the VMware Data Protection (VDP) Appliance on one of the
E. SXi Hosts to backup the virtual machines.
【单选题】
What is a benefit of using Enhanced vMotion Compatibility for an environment? ___
A. EVC masks CPU features to allow compatibility between hosts that are dissimilar.
B. EVC allows for cross platform vMotion to occur.
C. EVC enables Long
D. istance vMotion.
【单选题】
How many Link Aggregation Groups (LAGs) can be configured on a vSphere 6.x Distributed Switch? ___
A. 64
B. 96
C. 128
D. 256
【单选题】
How many Link Aggregation Groups (LAGs) can be configured on a vSphere 6.x Distributed Switch? ___
A. 64
B. 96
C. 128
D. 256
【单选题】
An administrator needs to verify that vMotion operations can be performed in a vSphere data center.What round trip time (RTT) latency is the maximum value that will allow vMotion operations to succeed? ___
A. 50ms RTT
B. 100ms RTT
C. 150ms RTT
D. 200ms RTT
【单选题】
A storage administrator has reported that full utilization of all bandwidth from an ESXi 6.x host is not being seen. In troubleshooting the issue, the Adapter details are shown in the Exhibit. Based on the exhibit, what is cause of the issue? ___
A. The array is not setup to use the correct multipathing policy.
B. There are no virtual machines on the ESXi host.
C. Not all links are used because a path is disabled.
D. Another path needs to be configured.
【单选题】
An administrator is migrating a powered-on virtual machine, as shown in the exhibit. Which option should be selected to perform a Storage vMotion of the VM? ___
A. Change storage only
B. Change VM compute resource only
C. Change both compute resource and storage, changing the compute resource first.
D. Change both compute resource and storage, changing the storage resource first.
【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? ___
【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.
