【单选题】
[135]评定气体火灾爆炸危险的主要指标是___。
A. 闪点
B. 自燃点
C. 热分解性
D. 爆炸极限
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相关试题
【单选题】
[136]高空作业是___。
A. 离开地面二米五
B. 离开地面二米
C. 离开地面三米
D. 离开地面一米八
【单选题】
[137]防毒口罩适用于极轻微___的有毒环境。
A. 0.1%以下
B. 0.1%以上
C. 任何浓度
D. 0.5%以下
【单选题】
[138]过滤式防毒面具由面罩、___、导气管、背包四部分组成。
【单选题】
[139]雷雨天要远离电杆、铁塔、避雷针至___米远。
【单选题】
[140]___级以上强风、雷雨或暴雨、下雪和雾天禁止露天起重作业和露天高处作业。
【单选题】
[141]工作环境（设备、容器、井下、地沟等）氧含量必须达到___20％以上，毒害物质浓度符合国家规定时，方能进行工作。
【单选题】
[142]氢气爆炸极限是___。
A. 2.0%-80.2%
B. 4.0％-75.6％
C. 10.2%-80.2%
【单选题】
[143]所有含硫化氢介质的采样和切水作业应为___方式。
【单选题】
[144]当H2S在空气中的浓度达到___时，即可明显闻得到臭鸡蛋味。
A. 70 mg/m3
B. 0.4mg/m3
C. 100 mg/m3
【单选题】
[145]在使用空气呼吸器作业，发生气瓶压力低报警时，应___。
A. 可以再作业10分钟后离开
B. 立即离开作业场所
C. 立即摘下呼吸器面罩
【单选题】
[146]如果你无意中进入了含H2S气体的环境该___。
A. 立即向上风头跑
B. 迅速原路返回
C. 立即向下风头跑
【单选题】
[147]空气呼吸器，气瓶备用压力应不低于___bar。
【单选题】
[148]在进行气割、焊接作业时，氧气、乙炔瓶之间应有5米以上的安全间距，与明火应保持___以上的距离，并且不能放在正在生产的设备、管道、输电线的垂直下方。
【单选题】
[149]进入金属容器和特别潮湿、工作场地特别狭窄的非金属容器内作业，照明电压应不大于___。
【单选题】
[150]工业企业噪声卫生标准，接触噪声时间8小时，允许噪声___分贝。
【单选题】
[152]过滤式防毒面具，一般当滤毒罐的重量增加___克后即为失效。
【单选题】
[153]在高温环境劳动中，若出现轻度头晕、头痛、大量出汗，口渴、耳鸣、恶心、四肢无力，还出现体温高于___，面部潮红皮肤灼热或出现面色苍白，大量出汗、恶心呕吐、血压下降脉搏快等呼吸循环衰竭的早期症状时为轻症中暑，需立即离开高温环境，除按先兆中暑处理外，应急送医院。
【单选题】
[154]正在运行的工艺生产装置区动火，为___级动火。
【单选题】
[155]一级、特级“中国石化用火作业许可证”有效时间不超过___，二级“中国石化用火作业许可证”不超过( )（不含周六、周日）。
A. 8小时、3天
B. 24小时、7天
C. 1天、一周
【单选题】
[156]在用火前应清除现场一切可燃物，并准备好消防器材。用火期间，距用火点( )米内严禁排放各类可燃气体，___米内严禁排放各类可燃液体。
A. 30米、15米
B. 30米、30米
C. 15米、15米
【单选题】
[157]破土作业许可证的有效期：在运行的生产装置、系统界区内最长不超过___天，界区外不超过一周。一个施工点一张破土作业许可证。
【单选题】
[158]射线作业必须办理作业许可证，作业许可证由射线作业单位填写，内容包括作业起止时间、作业区域、采取的防范措施、负责人、安全监护人。射线作业许可证___。
A. 一天一开、当日有效
B. 有效期2天
C. 可提前一天办理
D. 没有要求
【单选题】
[159]班组安全活动每月不少于___次，每次不少于1学时，安全活动时间不应挪作它用。
【单选题】
[162]裂解炉全部停车，裂解气压缩机应该___。
A. 继续运转
B. 低负荷运转
C. 按停车按钮
D. 都不对
【单选题】
[163]本装置压缩机事故油泵启动信号来自___。
A. 润滑油油压低
B. 控制油油压低
C. 主油泵出口压力低
D. 压缩机停车
【单选题】
[164]裂解气压缩机停车，压缩区丙烯用户应___。
A. 维持冷剂进料
B. 加大冷剂进料
C. 停冷剂进料
D. 停车倒空
【单选题】
[165]裂解气压缩机开车氮气来自___。
A. 临时补充线
B. 再生系统
C. T-103顶
D. 压缩机一段氮气补充线
【单选题】
[166]裂解气压缩机开车氮气置换要求O2含量___。
A. ≥78%体积分数
B. ≤0.2%体积分数
C. ≤2%体积分数
D. 都不对
【单选题】
[167]压缩机盘车油来自___。
A. 润滑油管
B. 控制油管
C. 主油泵出口
D. 事故油泵
【单选题】
[168]液相干燥器充液线来自___。
A. 液相干燥器出口
B. 液相干燥器入口
C. 丙烯塔
D. 丙烯压缩机
【单选题】
[169]正常生产中，再生气压力受___压力控制。
A. 裂解气压缩机出口
B. 冷箱
C. 燃料气
D. 裂解气压缩机一段入口
【单选题】
[170]乙烯压缩机事故停车，裂解气压缩机___。
A. 按停车按钮
B. 维持正常
C. 从急冷区放空
D. 从五段放空
【单选题】
[171]丙烯压缩机事故停车，碳二加氢反应器___。
A. 手动停车
B. 维持正常
C. 降温运行
D. 联锁停车
【单选题】
[172]压缩机喘振流量主要由___决定。
A. 压缩机转速和压缩机结构本身
B. 吸入压力
C. 吸入温度
D. 压缩机缸体数
【单选题】
[173]裂解气压缩机复水器正常工作压力为___MPa。
A. -0.0196
B. -0.196
C. -0.072
D. -0.72
【单选题】
[174]裂解气压缩机注水流量计应___安装。
A. 水平
B. 倾斜
C. 垂直
D. 呈一定角度
【单选题】
[175]润滑油从油泵出来先经过( )再经过___进入润滑油及控制油系统。
A. 冷却器 过滤器
B. 过滤器 冷却器
C. 减压阀 冷却器
D. 减压阀 过滤器
【单选题】
[176]中后冷凝器的冷却水来自___。
A. 循环水泵
B. 热水站
C. 复水泵
D. 都不对
【单选题】
[177]压缩机停车后油箱温度会___。
【单选题】
[178]压缩机叶轮背靠背排列的目的是___。
A. 减小径向推力
B. 减小轴向推力
C. 根据工艺需要
D. 根据现场安装需要
推荐试题
【多选题】
When using "Cluster resource percentage" for host failover capacity in vSphere HA Admission Control, the total resource requirements are calculated from which two values? (Choose two.)___
A. Total vCPUs assigned to each VM.
B. Average CPU usage on each VM over time.
C. Memory reservations on each VM.
D. Total memory assigned to each VM.
E. Average active memory on each VM over time.
F. CPU reservations on each VM.
【多选题】
Which are four attributes of the Active vCenter HA node? (Choose four)___
A. It uses the vCenter HA network to communicate with the Witness node.
B. It constantly replicates vPostgres data with the Witness node.
C. It uses a public IP address for the management interface.
D. It runs the active vCenter Server Appliance instance.
E. It uses the vCenter HA network for replication of data to the Passive node.
F. It provides a quorum to protect against split-brain situations.
【多选题】
Which are two vCenter Server two-factor authentication methods? (Choose two.)___
A. RSA SecurID
B. Smart Card
C. SAML
D. Symantec VIP
【多选题】
An administrator is creating VMkernel adapters on an ESXi 6.5 host and wants to create separate VMkernel adapters for every type of traffic in the default TCP/IP stack. Which three types of traffic can be explicitly enabled on a separate VMkernel adapter? (Choose three.)___
A. Virtual SAN traffic
B. NFS traffic
C. vMotion traffic
D. vSphere HA traffic
E. Fault Tolerance logging traffic
【多选题】
When migrating a Windows vCenter Server 6.0 to the vCenter Server Appliance 6.5, which two will be migrated by default? (Choose two.)___
A. Local Windows OS users and groups
B. Configuration
C. Custom ports
D. FQDN
E. Historical and Performance data
【多选题】
Which three types of Content Libraries exist within vSphere 6.5? (Choose three.)___
A. Remote Content Library
B. Published Content Library
C. Local Content Library
D. Shared Content Library
E. Subscribed Content Library
【多选题】
An administrator cannot enable multi-processor Fault Tolerance (SMP-FT) for a virtual machine. Which are two possible causes for this? (Choose two.)___
A. The virtual machine is running on a vSAN datastore.
B. The Fault Tolerance network is using a 10Gbit uplink.
C. The virtual machine has 6 vCPUs assigned.
D. The virtual machine has a 1TB VMDK attached.
E. The virtual machine has snapshots present.
【多选题】
Which two statements are true for Predictive DRS? (Choose two.)___
A. It balances resource utilization for virtual machines with unpredictable utilization patterns.
B. It integrates DRS with vRealize Operations Manager to balance workloads for virtual machines before resource utilization spikes occur.
C. It balances resource utilization based on a threshold's algorithm that runs each night.
D. It determines the best placement and balance of virtual machines based on a threshold's algorithm that runs each night in vCenter Server 6.5 Database.
【多选题】
Which two situations could cause a virtual machine to appear with (orphaned) appended to its name? (Choose two.)___
A. if a host failover is unsuccessful
B. if a virtual machine was removed from vCenter Server's inventory
C. if a virtual machine was deployed from template, and the template has been deleted
D. if a virtual machine is unregistered directly on the host
【多选题】
Which three requirements are needed to apply RAID 5 or RAID 6 erasure coding on a vSAN 6.2 or 6.5 object? (Choose three.)___
A. on Disk Format 3.0
B. Hybrid vSAN
C. All Flash vSAN
D. vSAN Advanced License
E. Stretched Cluster Configurations
【多选题】
An administrator sees the following error in the log files: Which two events could be the source of the error message? (Choose two.)___
A. vCenter Server failure
B. VXLAN failure
C. Disk array failure
D. Network failure
E. ESXi host failure
【多选题】
An administrator is attempting to access an ESXi host via the DCUI but is unable to do so. Which could be two possible causes? (Choose two.)___
A. The host in Qhas no out-of-band management capability (i.e. iLO/iDRAC).
B. The SSH service is disabled on the host.
C. Strict lockdown mode is enabled on the host.
D. Normal lockdown mode is enabled and the administrator is a member of the
E. xception User list.
【多选题】
Which two permissions are required to migrate a virtual machine with Storage vMotion? (Choose two.)___
A. Network > Move Network
B. Virtual Machine > Inventory > Move
C. Resource > Migrate powered on virtual machine
D. Datastore > Allocate Space
【多选题】
Which are three supported storage requirements for vCenter Server HA? (Choose three.)___
A. NFS
B. RDM
C. vSAN
D. VMFS
E. JBOD
【多选题】
Which are the two network requirements for a VMware vSAN 6.5 cluster? (Choose two.)___
A. Multicast must be enabled on the physical switches and routers that handle vSAN traffic.
B. vSAN requires IPv6 only.
C. All hosts must have a dedicated 40GbE NIC.
D. The vSAN network supported IPv4 or IPv6.
E. vSAN requires IPv4 only.
【多选题】
Which three prerequisites must be in place prior to enabling secure boot for a virtual machine? (Choose three.)___
A. VirtualMachine.Config.Settings privileges
B. an encrypted USB drive
C. Virtual Hardware version 13 or later
D. Virtual Hardware version 12 or later
E. EFI firmware
【多选题】
A user is given the "Virtual machine user (sample)" role in a vSphere 6.x environment. Which three permissions would the user be able to perform? (Choose three.)___
A. Reset a virtual machine.
B. Power on a virtual machine.
C. Move a host into a cluster.
D. Configure CD media.
E. Migrate a virtual machine with Storage vMotion.
【多选题】
Which three are supported upgrade processes for ESXi host? (Choose three.)___
A. using vSphere Auto Deploy
B. using a TFTP server
C. using Update Manager
D. using an
E. SXCLI command
【多选题】
When enabling Storage DRS on a datastore cluster, which three components are enabled as a result? (Choose three.)___
A. Space load balancing among datastore within the datastore cluster.
B. Initial placement for virtual disks based on space and I/O workload.
C. I/O load balancing among datastores within the datastore cluster.
D. Queue Depth alerting on disks within the datastore cluster.
E. Data de-duplication within the datastore cluster.
【多选题】
What are two features introduced in Network I/O Control version 3? (Choose two.)___
A. Bandwidth reservation per traffic type
B. Network resource pools
C. CoS tagging
D. Bandwidth guarantee to virtual machines
【多选题】
Which two correct virtual machine advanced configuration parameters will accomplish this? (Choose two.)___
A. isolation.device.edit.disable = “FALSE”
B. isolation.device.edit.disable = “TRUE”
C. isolation.device.connectable.disable = “FALSE”
D. isolation.device.connectable.disable = “TRUE”
【多选题】
Which three statements are correct regarding booting an ESXi Host from Fibre Channel SAN? (Choose three.)___
A. Direct connect topology is supported.
B. Each host must have its own boot LUN.
C. ESXi hosts do not require local storage.
D. Multipathing to a boot LUN on an active-passive array is supported.
E. Hosts can share one common boot LUN.
【多选题】
Which two tasks should a vSphere administrator perform if the vmkernel log reports VMFS metadata errors? (Choose two.)___
A. contact VMware technical support
B. reformat the datastore
C. check the device with VOMA
D. ignore the messages
【多选题】
Which two statements are true for a vCenterServer user account that is used for vSphere Data Protection (VDP)? (Choose two.)___
A. The user account must be assigned with Administrator role.
B. The password for the user account cannot contain spaces.
C. The user account should be created in the Single Sign-On domain
D. The user account cannot inherit required permissions from a group role.
【多选题】
Which three storage protocols are supported by Virtual Volumes? (Choose three.)___
A. FCIP
B. FCoE
C. iSCSI
D. NFS v3
E. NFS v4
【多选题】
A vSphere administrator observes a CPU spike on one of the web servers (view the Exhibit.) Which two statements can describe the cause of this activity? (Choose two.)___
A. The network packet size is too large.
B. VMware Tools is not installed.
C. Disk latency is present on the datastore.
D. The network packet size is too small.
【多选题】
Which three operations can cause VMFS metadata updates? (Choose three.)___
A. Restarting a VM using the guest OS.
B. Launching a VM console.
C. Migrating a VM with vMotion.
D. Powering a VM on or off.
E. Expanding a VMFS datastore.
【多选题】
*What two services run on all nodes in a vCenter Server HA cluster? (Choose two.)___
A. vmware-vmon
B. vmware-vpostgres
C. vmare-rbd-watchdog
D. vmware-vcha
【多选题】
Which two statements are true regarding Auto Deploy in version 6.5? (Choose two.)___
A. Auto Deploy can be configured and managed via PowerCLI.
B. Auto Deploy can be configured and managed via the vSphere Client.
C. Auto
D. eploy can be configured and managed via the vSphere Web Client.
【多选题】
What three options can improve network performance for a virtual machine? (Choose three.)___
A. MLD
B. TSO
C. NetFlow
D. LRO
E. SR-IOV
【多选题】
Which two storage technologies are supported for MSCS? (Choose two.)___
A. NFS
B. VAAI
C. iSCSI
D. FC
【多选题】
When upgrading a VMware vSAN cluster to version 6.5, which two tasks must be completed to comply with upgrade requirements and VMware-recommended best practices? (Choose two.)___
A. Use RVC to upgrade the hosts.
B. Use the latest available ESXi version.
C. Back up all VMs.
D. Use only the “Full data migration” maintenance mode option.
【多选题】
What two enhancements are in VMFS6 but not in VMFS5? (Choose two.)___
A. Support for 4k native disks
B. Support for 512e disks
C. GPT storage device partitioning
D. Automatic space reclamation
【多选题】
Which two statements describe why a vSphere DRS cluster would report load imbalance? (Choose two.)___
A. The configured migration threshold is too high.
B. The configured migration threshold is too low.
C. DRS is configured for Partially Automated.
D. Enhanced vMotion Compatibility (EVC) is enabled.
【多选题】
A vSphere Administrator must ensure that vCenter Server service is running in a domain user account rather than Local System Account. To accomplish this, the user account should have which two permissions? (Choose two.)___
A. Log on as a service.
B. Act as part of the operating system.
C. Log on as a batch job.
D. Log on locally.
【多选题】
A virtual machine fails to power on after being deployed from a template. What two remediation steps could correct this issue? (Choose two.)___
A. Increase CPU reservation
B. Decrease memory reservation
C. Increase memory reservation
D. Increase datastore capacity
E. Decrease CPU reservation
【多选题】
Which three directories are available under the vcsa-cli-installer folder of the vCenter Server Appliance installation media? (Choose three.)___
A. \mac
B. \ovftool
C. \migration-assistant
D. \win32
E. \lin64
【多选题】
What are three considerations when booting ESXihost from SAN software FCoE? (Choose three.)___
A. The VMware_FCoE_vSwitch that the installer automatically created cannot be changed.
B. Boot LUN cannot be shared with other hosts even on shared storage.
C. Multipathing is not supported at pre-boot.
D. Software FCoE boot configuration cannot be changed from within
E. SXi.
【多选题】
Which two choices are applicable to vSphere Availability? (Choose two.)___
A. Heartbeat Datastores
B. VM Startup/Shutdoown
C. Power Management
D. Admission Control
【多选题】
A user is a member of groups A and B. -VM10 and VM20 are in VM Folder. -Group A is assigned permission “Read-only” on VM Folder. What two configurations will allow the user to edit the settings for only VM10? (Choose two.)___
A. Assign group B permission “virtual machine power user” to VM10.
B. Assign group B permission “virtual machine console user” to VM10.
C. Assign group A permission “virtual machine console user” to VM10.
D. Assign group A permission “virtual machine power user” to VM10.
