【单选题】
高压电气试验中下列说法错误的是:_______
A. 在同一电气连接部分进行高压试验前,必须暂停其他检修工作,试验结束、设备未充分放电前不得许可其他工作
B. 被试设备两端不在同一地点的,试验时两端必须有人监护并采取防范措施
C. 试验设备应在检验合格有效期内,采用专用的试验仪器和设备
D. 试验中断、变更接线或试验结束时应观察15分钟后断开试验电源,将被试设备放电并短路接地
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相关试题
【单选题】
中控系统维护检修时,下列说法错误的是:_______
A. 中控系统的所有操作系统或设备宜采用强密码方案进行管理
B. 经站长允许,可在中控系统的服务器、工程师站、操作员站、交换机上进行软件安装、文件修改、文件复制转移等操作
C. 除维护和特殊检修作业外,服务器、工程师站、操作员站应屏蔽软盘、U盘等外部接口
D. 存储介质使用前应定使用专用杀毒工具进行病毒查杀
【单选题】
站控系统检修维护中,下列说法正确的是____。___
A. 经站长许可,就可在站控操作员站上进行软件安装、文件修改、文件复制转移等操作
B. 站控电脑外部接口可供值班人员日常手机充电使用
C. 维护作业前,应将全站电动执行机构切换至远控状态
D. 维护作业前,应关闭站内电动ESD紧急放空阀前手动球阀
【单选题】
高空作业安全带的使用方法是 _______
A. 低挂高用
B. 平挂平用
C. 无特殊要求
D. 高挂低用
【单选题】
安全标志分为: 禁止标志、 警告标志、 指令标志和____标志。___
【单选题】
挖掘作业施工现场应根据需要设置护栏、盖板和警告、____ ,夜间应悬挂红灯警示;施工结束后要及时回填,并恢复地面设施。___
A. 警示标志
B. 管道标识
C. 彩旗
D. 应急工具
【单选题】
深基坑(开挖深度超过____以上或地下室三层以上,或深度虽未超过____,但地质条件和周围环境及地下管线特别复杂的基坑)作业应编制专项施工方案,采取相应的安全防护措施,方案及措施应经专家评审。___
【单选题】
临时用电应设置漏电保护装置,使用前应检查电气设备和____完好可用。___
A. 电缆电线
B. 外观
C. 漏电保护装置
D. 开关
【单选题】
送电操作顺序为:____。___
A. 总配电箱——分配电箱——开关箱
B. 开关箱——总配电箱——分配电箱
C. 分配电箱——总配电箱——开关箱
D. 开关箱——分配电箱——总配电箱
【单选题】
正常停电操作顺序为:_______
A. 总配电箱——分配电箱——开关箱
B. 开关箱——总配电箱——分配电箱
C. 分配电箱——总配电箱——开关箱
D. 开关箱——分配电箱——总配电箱
【单选题】
在脚手架作业前和作业过程中应根据需要设置安全通道和隔离区,隔离区应设置____,禁止在安全通道上堆放物品。___
A. 安全警示带
B. 告示牌
C. 警戒标志
D. 专人看管
【单选题】
电缆竖井、电缆层(室)内有充足的照明,有防火、防水、____的措施___
【单选题】
发电机进行维护保养时,必须在____状态下进行___
A. 待机
B. 停机
C. 运行
D. 以上均不是
【单选题】
喷砂作业时,应避免扬尘对环境造成污染,宜采用____对管道及其附属设施进行除锈工作。___
A. 机械除锈
B. 化学除锈
C. 不用除锈
D. 水喷砂除锈
【单选题】
电焊时焊工应避免与铁件直接接触,并穿干燥的工作服,站立在_______
A. 橡胶绝缘垫上
B. 穿橡胶绝缘鞋
C. 橡胶绝缘垫上和穿橡胶绝缘鞋
D. 橡胶绝缘垫上或穿橡胶绝缘鞋
【单选题】
置换前确认____。___
A. 氮气减压阀、皮管、连接卡套等完好无破损
B. 连接牢固、接头匹配
C. 防止皮管、引压管等弹出伤人
D. 以上均是
【单选题】
埋地管道外防腐层修复前,使用火焰喷枪进行修复作业的,应检查作业区域____,枪口不得朝向作业人员。___
A. 是否有可燃物
B. 可燃气体浓度
C. 氧含量浓度
D. 有毒气体浓度
【单选题】
收、发球作业前,应确认收、发球筒前后隔离阀门已切换至____ 状态,无需操作阀门时切断动力电源,悬挂禁止操作牌。___
A. 就地 stop
B. 远控
C. 就地
D. 均可
【单选题】
收球作业时,为防止污物中的硫化亚铁自燃,必要时可对收球筒进行注入____操作。___
【多选题】
工作过程所涉及的____等设备的设定或技术参数,运行条件等发生变化的,应在工作完成情况及说明中详细说明,并由检修和运行双方签字确认。___
A. 仪表
B. 阀门
C. 控制系统
D. 精密空调
【多选题】
应按照国家标准规定对起重机械进行____,对在检查中发现有问题的起重机械,应进行检修,并保存检修档案。___
【多选题】
高压电气试验中,下列说法正确的是_______
A. 在同一电气连接部分进行高压试验前,必须暂停其他检修工作,试验结束、设备未充分放电前不得许可其他工作
B. 高压设备与其他设备断点符合安全距离要求,试验区范围内向外装设警示围栏,悬挂“禁止合闸,有人工作”标示牌
C. 试验装置外壳应可靠接地,低压回路中应有过载自动保护装置的开关并串用三极刀闸
D. 试验中断、变更接线或试验结束时应立即断开试验电源,将被试设备放电并短路接地
【多选题】
仪表检定中,下列说法正确的是_______
A. 仪表检定人员经过上岗培训符合能力要求即可进行操作,保证量值传递准确、可靠、统一;
B. 对计量标准器具应定期进行维护保养,使其处于良好技术状态
C. 计量标准器具应按周期进行检定,特殊情况可超期使用但不得超期1个月
D. 检定人员在操作过程中,如发现异常应立即停止使用,查明原因,防止量值传递事故发生
【多选题】
压力容器(管道)及其附属设施检修维护中,下列说法正确的是_______
A. 打开压力容器盲板、人孔门作业时,作业人员不得正对盲板、人孔门,盲板、人孔门打开后需进行固定,防止人员受伤
B. 不得擅自紧固带压容器上的螺栓或其它紧固件,经相关领导批准可带压拆卸紧固件
C. 作业人员进入压力容器(管道)作业前应确认安全措施完备,压力容器(管道)应通风顺畅
D. 附属安全阀作业前应关闭安全阀前隔离球阀,检查阀门的内漏情况,放空阀门及引压管内余压,压力降为0.1MPa后方可进行拆卸
【多选题】
通用阀门维护检修时,下列说法正确的是_______
A. 维护前应确认阀门已退出运行,悬挂禁止操作牌,带执行机构的阀门应将阀门切换至远控状态
B. 拆卸阀门附属设施应先对阀腔进行排空,拆卸过程应缓慢,并观察螺纹口是否有气体冒出
C. 安全阀、ESD前手动球阀应保持常闭,并做好闭锁
D. 开启阀腔泄压口泄压时,作业人员不得正对阀腔泄放口
【多选题】
输气管道设备设施上工作保证安全的组织措施有_______
A. 工作票制度、工作许可制度
B. 工作监护制度
C. 工作间断、延期、变更和终结制度
D. 特殊作业许可证制度
【多选题】
需要编制专项施工方案的特殊作业中,脚手架工程包含但不限于以下作业:_______
A. 搭设高度20M及以上的落地式钢管脚手架工程
B. 附着式整体和分片提升脚手架工程
C. 悬挑式脚手架工程、吊篮脚手架工程
D. 自制卸料平台、异动操作平台工程;新型及异型脚手架工程
【多选题】
特殊作业许可证中应明确的内容有哪些?_______
A. 作业时间、地点、作业内容
B. 签发人、工作负责人、监护人
C. 执行人、批准人、许可人
D. 风险控制措施
【多选题】
在输气管道设备设施上进行____喷火加热等动火作业,必须办理动火作业许可证。动火作业许可证作为工作票的补充,不能代替工作票。___
【多选题】
特殊作业许可证中应明确____等内容。___
A. 作业时间、地点、作业内容
B. 签发人、工作负责人
C. 风险控制措施
D. 监护人、批准人、许可人
【多选题】
专项施工方案应经管道企业分管技术领导组织作业部门、____审查批准后,作为办理工作票、特殊作业许可证的依据。___
A. 工作许可部门
B. 技术管理部门
C. 安监部门
D. 监理部门
【判断题】
涉及交叉作业的各方应严格按照专项方案落实安全措施。
【判断题】
需要系统隔离时,应进行系统隔离、吹扫、置换,交叉作业时需考虑相互间区域隔离。
【判断题】
工作完成后,工作参加人应全面检查并组织清扫整理施工现场。
【判断题】
采用非常规起重设备、方法,且单件起吊重量在0.5吨及以上的起重吊装工程应编制专项施工方案。
【判断题】
拆除管线的动火作业,必须先查明内部介质及其走向,并制定相应的安全防火措施。
【判断题】
对于采用氮气或其它惰性气体对可燃气体进行置换后的密闭空间内作业前应进行含氧量检测,环境氧含量应大于21.5%。
【判断题】
使用气焊焊割动火作业时,氧气瓶与乙炔气瓶间距应不小于3m。
【判断题】
电焊机的接拆线、停送电工作应由检修人员操作。
【判断题】
进入特别潮湿作业场所作业,还应穿绝缘鞋、戴绝缘手套,照明电压不超过24V。
【判断题】
使用氧气、乙炔时,应将瓶内气体全部用完。
推荐试题
【多选题】
When using the Adaptive Security Device Manager(ASDM), which two methods are available to add a new root certificate?___
A. Use sCep
B. Install from SFTP server
C. Install from a file
D. Use Https
E. Use LDAP
【多选题】
Which two are considered basic security principles?___
A. Accountability
B. Redundancy
C. High Availabilit
D. Integrity
E. Confidentiality
【多选题】
Which two roles of the Cisco WSA are true?___
A. IPS
B. firewall
C. antispam
D. web proxy
E. URL filter
【单选题】
Which next-generation encryption algorithm supports four variants?___
A. SHA-2
B. SHA-1
C. MD5
D. HMAC
【单选题】
What aims to remove the abil ity to deny an action?___
A. Non-Repudiation
B. Accountability
C. Integrity
D. Deniability
【单选题】
Which statements about the native VLAN is true ?___
A. It is susceptible to VLAN hopping attacks.
B. It is the Cisco recommended VLAN for switch-management traffic
C. It is most secure when it is a ssigned to vLAn 1.
D. It is the cisco-recomme nded vlan for user traffic
【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases?___
【单选题】
What does the dh group refer to?___
A. length of key for hashing C
B. length of key for encryption
C. tunnel lifetime key
D. length of key for key exchange
E. length of key for authentication
【单选题】
Which path do you follow to enable aaa through the SDM ?___
A. Configure Tasks > AAA
B. Configure > Addition Authentication > AAA
C. Configure > AAA
D. Configure > Additional Tasks > AAA
E. Configure Authentication > AAA
【单选题】
which technology cloud be used on top of an MPLS VPN to add confidentiality ?___
A. IPsec
B. 3DES
C. AES
D. SSL
【单选题】
Which term is most closely aligned with the basic purpose of a SIEM solution? ___
A. Non-Repudiation
B. Accountability
C. Causality
D. Repudiation
【单选题】
You have just deployed SNMPv3 in your environment, Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request?___
A. A SNMP View containing the SNMP managers
B. Routing Filter with the SNMP managers in it applied outbound
C. A standard ACL containing the SNMP managers applied to the SNMP configuration
D. A SNMP Group containing the SNMP managers
【单选题】
Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port?___
A. BPDU filte
B. DHCP snooping
C. BPDU guard
D. Port Fast
【单选题】
Which command enables port security to use sticky MAC addresses on a switch?___
A. switchport port-security violation restrict
B. switchport port-security mac-address sticky
C. switchport port-security violation protect
D. switchport port-security
【单选题】
When you edit an IPS subsignature, what is the effect on the parent signature and the family of subsignatures?___
A. The change applies to the parent signature and the entire family of subsignatures
B. The change applies to the parent signature and the subsignature that you edit
C. The change applies only to subsignatures that are numbered sequentially after the subsignature that you edit
D. Other signatures are unaffected, the change applies only to the subsignature that you dit
【单选题】
Which type of mechanism does Cisco FirePOWER de ploy to protect ag detected moving across other networks?___
A. antivirus scanning
B. policy-based
C. reputation-based
D. signature-based
【单选题】
What action must you take on the ise to blacklist a wired device?___
A. Locate the switch through which the device is connected and push an a cl restricting all access by the device
B. Issue a CoA request for the de vice's mac address to each access switch in the network
C. Revoke the device's certificate so it is unable to authenticate to the network
D. Add the device's MAc address to a list of black listed devices
【单选题】
Which type of firewall can perform deep packet inspection?___
A. packet-filtering firewall
B. stateless firewall
C. application firewall
D. personal firewall
【单选题】
What is the main purpose of Control Plane Policing?___
A. to prevent exhaustion of route-proce ssor resources
B. to organize the egress packet queues
C. to define traffic classes
D. to maintain the policy map
【单选题】
Which attack can be prevented by OSPF authentication?___
A. smurf attack
B. IP spoofing attack
C. denial of service attack
D. buffer overflow attack
【单选题】
What is the best definition of hairpinning?___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5, but does not use encryption?___
A. authPriv
B. authNo Priv
C. noAuthNoPriv
D. NoauthPriv
【单选题】
You have implemented a dynamic blacklist, using security intelligence to block illicit network activity. However, the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites?___
A. Create a whitelist and manually add the approved addresses.
B. Disable the dynamic blacklist and deny the specif ic address on a whitelist while permitting the others
C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat(ins,any)dynamic interface】Which ty pe of NaT is configured on a Cisco ASA?___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network?___
A. CTA
B. DCA
C. AMP
D. DLP
【单选题】
Refer to the exhibit. What is the effect of the given configuration?___
A. It establishes the preshared key for the switch
B. It establishes the preshared key for the firewall.
C. It establishes the preshared key for the Cisco ISE appliance
D. It establishes the preshared key for the router.
【多选题】
What are two major considerations when choosing between a SPAN and a TAP when plementing IPS?___
A. the type of analysis the iS will perform
B. the amount of bandwidth available
C. whether RX and TX signals will use separate ports
D. the way in which media errors will be handled
E. the way in which dropped packets will be handled
【多选题】
What are two direct-to-tower methods for redirecting web traffic to Cisco Cloud Web Security?___
A. third-party proxies
B. Cisco Catalyst platforms
C. Cisco NAC Agent
D. hosted PAC files
E. CiSco ISE
【多选题】
Which three descriptions of RADIUS are true? ___
A. It uses TCP as its transport protocol.
B. Only the password is encrypted
C. It supports multiple transport protocols
D. It uses UDP as its transport protocol
E. It combines authentication and authorization
F. It separates authentication,authorization,and accounting
【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10?___
A. using switchport trunk native vlan 10 command on trunk ports
B. enabling BPDU guard on all access ports
C. creating VLAN 99 and using switchport trunk native vlan 99 command on trunk ports
D. applying ACl between VLAN
E. using switchport mode access command on all host ports
F. using switchport nonegotiate command on dynamic desirable ports
【多选题】
What are two features of transparent firewall mode ___
A. It conceals the presence of the firewall from attackers
B. It allows some traffic that is blocked in routed mode
C. It enables the aSA to perform as a router.
D. It acts as a routed hop in the network.
E. It is configured by default
【多选题】
Which two models of A sa tend to be used in a data center?___
A. 5555X
B. 5585X
C. ASA service module
D. 5512X
E. 5540
F. 5520
【多选题】
Which two statements about hardware-based encrption are true?___
A. It is widely accessible
B. It is potentially easier to compromise than software-based encryption. It requires minimal configuration
C. It requires minimal configuration
D. It can be implemented without impacting performance
E. It is highly cost-effective
【多选题】
In which two modes can the Cisco We b Security appliance be de ployed?___
A. as a transparent proxy using the Secure Sockets Layer protocol
B. as a transparent proxy using the Web Cache Communication Protocol
C. explicit proxy mode
D. as a transparent proxy using the Hyper Text Transfer Protocol
E. explicit active mode
【单选题】
1.三相刀开关的图形符号与交流接触器的主触点符号是___。
A. 一样的
B. 可以互换
C. 有区别的
D. 没有区别
【单选题】
5.熔断器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护