【判断题】
金属板防水层焊缝不得有裂纹、未熔合、夹渣、焊瘤、咬边、烧穿、弧坑、针状气孔等缺陷；保护涂层应符合设计要求；
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【判断题】
隧道质量评定分为“优良”、“合格”、“不合格”三个等级。
【判断题】
结构维修主要是针对地铁土木工程所有项目
【判断题】
车站、隧道结构防水堵漏包含巡检、维修、大修三大类
【判断题】
大修主要是对结构进行修理，以解决日常维修不能处理的严重病害，达到根治病害，恢复功能，延长使用年限的目的。
【判断题】
临时补修是：对生产调度的报修和当天巡检过程中发现的结构设施故障，直接影响到行车和乘客的安全，进行抢修作业，防止故障病害扩大，确保设施的使用安全。
【判断题】
进行作业准备时防护人员应备齐各种防护用品，检查通讯设备状态，确保性能良好
【判断题】
施工人员必须坚决坚持“安全第一、防治结合”的方针
【判断题】
维修人员必须严格执行“三不动、三不离、四不放过”等基本安全生产制度
【判断题】
各作业项目在施工结束前务必做到“工完、料尽、场地清”
【判断题】
临时存放于轨行区的垃圾，必须装袋存放在指定地点并做好标识，确保不侵限且不因活塞风而移动，并及时安排计划清理出去
【判断题】
因应急需要布设在轨行区域的工具、设备、材料备品，或生产需要临时暂存于轨行区域的物品应确保远离行车线路，确保不侵限并且不因活塞风而移动，其中属于通用的物品应通过标识标贴标明所属单位。
【判断题】
登高人员必须做好安全防护工作，佩戴好安全带，遵守“高挂低用”的原则
【判断题】
进行堵漏作业时，应沿裂缝、接缝两边直线钻孔
【判断题】
进行堵漏作业时，确定裂缝位置后，可直接进行钻孔注浆
【判断题】
检测裂缝时，只需准确测出裂缝深度，即可确认维修范围
【判断题】
开孔时，钻孔角度应与表面成约40度角，并在混凝土内穿过裂缝、接缝；钻孔的直径约为12毫米，深度依据现场环境而定。
【判断题】
开孔时，钻孔角度应与表面成约40度角，并在混凝土内穿过裂缝、接缝；钻孔的直径约为15毫米，深度依据现场环境而定。
【判断题】
对垂直的裂缝、接缝进行注浆堵漏时，应由下端至上端注浆
【判断题】
对垂直的裂缝、接缝进行注浆堵漏时，可任意从上下端进行注浆
【判断题】
施工完成后，做到工完料清，用松香水冲洗灌浆机
【判断题】
施工完成后，做到工完料清，用清水冲洗灌浆机
【判断题】
注浆堵漏处应由次日班组拆除所有已完成灌浆的接头；完工后，用水冲洗接缝，铲除接缝、裂缝流出的所有凝胶，以免影响行车安全；凿除裂缝表面封漏材料，用不收缩砂浆填平。
【判断题】
注浆堵漏处应由次日班组拆除所有已完成灌浆的接头；完工后，用松香水冲洗接缝，铲除接缝、裂缝流出的所有凝胶，以免影响行车安全；凿除裂缝表面封漏材料，用不收缩砂浆填平。
【判断题】
注浆堵漏处应由次日班组拆除所有已完成灌浆的接头；完工后，用松香水冲洗接缝，铲除接缝、裂缝流出的所有凝胶，以免影响行车安全；不需凿除裂缝表面封漏材料。
【判断题】
各特殊工种必须持证上岗，并进行必须的岗前培训，上岗证永久有效。
【判断题】
地面引流时，需用切割机开出一条约10cm宽的引流槽，然后用电镐将砂浆层凿除，
【判断题】
桥涵维修长度计算标准中，跨度40m及以上的结合梁、钢管拱桥、斜拉桥等桥梁维修长度每米折合2.0桥涵换算米
【判断题】
桥涵维修长度计算标准中，跨度40m及以上的结合梁、钢管拱桥、斜拉桥等桥梁维修长度每米折合2.5桥涵换算米
【判断题】
桥涵维修长度计算标准中，跨度40m及以下的结合梁维修长度每米折合1.5桥涵换算米
【判断题】
桥涵维修长度计算标准中，跨度40m及以下的结合梁维修长度每米折合1.0桥涵换算米
【判断题】
桥涵维修长度计算标准中，涵洞维修长度每米折合0.5桥涵换算米
【判断题】
桥涵维修长度计算标准中，涵洞维修长度每米折合0.8桥涵换算米
【判断题】
桥涵维修长度计算标准中，声屏障维修面积每平米折合0.25桥涵换算米
【判断题】
桥涵维修长度计算标准中，声屏障维修面积每平米折合0.5桥涵换算米
推荐试题
【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
【单选题】
6．热继电器的作用是___。
A. 短路保护
B. 过载保护
C. 失压保护
D. 零压保护
【单选题】
7．交流接触器的作用是可以___接通和断开负载。
【单选题】
8．三相异步电动机的启停控制线路由电源开关、熔断器、___、热继电器、按钮等组成。
A. 时间继电器
B. 速度继电器
C. 交流接触器
D. 漏电保护器
【单选题】
9．三相异步电动机的启停控制线路中需要有___、过载保护和失压保护功能。
A. 短路保护
B. 超速保护
C. 失磁保护
D. 零速保护
【单选题】
10维修电工以___、安装接线图和平面布置图最为重要。
A. 电气原理图
B. 电气设备图
C. 电气安装图
D. 电气组装图
【单选题】
11．熔断器的额定电压应___线路的工作电压。
A. 远大于
B. 不等于
C. 小于等于
D. 大于等于
【单选题】
12．对于电阻性负载，熔断器熔体的额定电流___线路的工作电流。
A. 远大于
B. 不等于
C. 等于或略大于
D. 等于或略小于
【单选题】
13．对于电动机负载，熔断器熔体的额定电流应选电动机额定电流的___倍。
A. 1~1.5
B. 1.5-2.5
C. 2.0~3.0
D. 2.5~3．5
【单选题】
14．使用快速熔断器时，一般按___来选择。
A. IN=1.03IF
B. IN=1.57IF
C. IN=2.57IF
D. IN=3IF
