【填空题】
热电偶的热电势是热电偶两端温度差的函数，是___的，所以在不同温域内温差相等，热电势并不相等。 非线性
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相关试题
【填空题】
在热工仪表及自动装置中，应采用___电缆。其型号、规格应符合设计要求，截面积一般不小于___。 铜芯，1m㎡
【填空题】
开关量变送器的死区有时称为差值，它是变送器的___和___之间的差值。 动作值，复位值
【填空题】
从干扰作用于仪表的形式上来分，可分为___、___。 横向干扰，纵向干扰
【填空题】
测量过程有三要素：一是___、二是___、三是___。 测量单位，测量方法，测量工具
【填空题】
测量滞后一般由___引起，克服测量滞后的办法是在调节规律中___。 测量元件特性，加微分环节
【填空题】
直接安装在管道上的仪表，宜在___安装，当必须与管道同时安装时，在___应将仪表拆下。 管道吹扫后压力试验前，管道吹扫前
【填空题】
安装压力表时，取样点的选择题应有代表性，不能将测点选在___的地方。 有涡流
【填空题】
金属保护管埋设时宜采用___，并应做___。 套管焊接，防腐处理
【填空题】
根据国家标准，工业自动化仪表用模拟直流电流信号是___，其负载电阻是___。 4-20mA，250-750Ω
【填空题】
当用仪表对被测参数进行测量时，仪表若不能及时地反映被测参数而造成的误差，称为___误差。 动态
【填空题】
校验仪表时，主要用___和___来判断仪表是否合格。 仪表精度，变差指标
【填空题】
行程开关采用___的方法测量物体的___，以获得行程信号。 直接接触，机械位移量
【填空题】
测量汽、水、油等介质的导管在仪表或变送器前均应装设___，除汽水差压测量有时用三角阀外，一般都采用仪表___。 二次阀门，针型阀
【填空题】
测量高压力时，介质最大工作压力一般不宜超过仪表量程的___。 3/5
【填空题】
普通硅油使用温度是___，密度为___，温度系数是___，25时的粘度___。 -40℃~150℃0.9340.001089.5mpA.s
【填空题】
高温硅油使用温度是___，密度为___，温度系数是___，25时的粘度___。 15℃~315℃1.0700.0005344~50mpA.s
【填空题】
高压力时用___膜片，低压力时用___膜片。 厚薄
【填空题】
补偿导线的功能___、___。 实现了冷端迁移降低了电路成本
【填空题】
雷达手操器与显示屏最大距离为___。 600mm
【填空题】
放射性强度的常用单位是居里，符号为___，表示在1秒钟内发生___次核衰变。 Ci3.7×1010
【填空题】
测量电缆电线的绝缘电阻时、必须将已连接上的仪表设备及部件___。 断开
【填空题】
测量管道在满足测量要求的前提下，应按___路径敷设。 最短
【填空题】
测量差压的正压管和负压管，应安装在___相同的地方。 环境温度
【填空题】
安装在爆炸危险环境的仪表、仪表线路、电气设备及材料.其规格型号必须符合___规定。 设计文件
【填空题】
防爆设备应有铭牌和防爆标志，并在铭牌上标明国家授权的部门所发给的___编号。 防爆合格证
【填空题】
本质安全电路及其附件，应有___色标志。 蓝
【填空题】
接地系统的连线应使用___绝缘电线或电缆，采用镀锌螺栓紧固，仪表盘、柜、箱内的接地汇流排应使用___，并有___固定。接地总干线与接地体之间应采用焊接。 铜芯铜材绝缘支架
【填空题】
仪表盘、柜、箱内各回路的各类接地，应分别由各自的接地支线引至接地汇流排或接地端子板，由接地汇流排或接地端子板引出接地干线，再与接地总干线和___相连。各接地支线、汇流排或端子板之间在非连接处应彼此___。 接地极绝缘
【单选题】
网络管理员在网络中捕获到了一个数据帧，其目的MAC地址是01-00-5E-A0-B1-C3。关于该MAC地址的说法正确的是___。
A. 它是一个单播MAC地址
B. 它是一个广播MAC地址
C. 它是一个组播MAC地址
D. 它是一个非法MAC地址
【单选题】
以下哪项不是CSMA/CD的工作原理？___
A. 边发边听
B. 延迟固定时间后重发
C. 冲突停发
D. 随机延迟后重发
E. 先听后发
【单选题】
主机的IPv4地址为200.200.200.201/30，拥有下列哪个IPv4地址的主机和其通信不需要经过路由器转发？___
A. 200.200.200.1
B. 200.200.200.202
C. 200.200.200.200
D. 200.200.200.203
【单选题】
人体结构和功能的基本单位是
A. 细胞
B. 细胞间质
C. 组织
D. 系统
【单选题】
下列关于解剖学标准姿势的描述，错误的是
A. 身体直立
B. 两眼平视前方
C. 上肢下垂，掌心向内
D. 下肢并拢
【单选题】
有关方位术语内侧的叙述中，正确的是
A. 近腔面者为内侧
B. 远离腔面者为内侧
C. 近正中矢状面者为内侧
D. 远离正中矢状面者为内侧
【单选题】
党的十九大报告指出，经过长期努力，中国特色社会主义进入了___，这是我国发展新的历史方位。
A. 新时代
B. 新纪元
C. 新阶段
D. 新时期
【单选题】
党的十九大报告提出新时代党的建设总要求，突出___在党的建设中的重要地位。
A. 思想建设
B. 政治建设
C. 纪律建设
D. 作风建设
【单选题】
党的十九大报告提出一个新目标，即“在本世纪中叶建成___的社会主义现代化强国”。
A. 富强、民主、文明、幸福、绿色
B. 富强、民主、文明、幸福、美丽
C. 富强、民主、文明、和谐、绿色
D. 富强、民主、文明、和谐、美丽
【单选题】
党的十九大报告中列举了十四条新时代坚持和发展中国特色社会主义的基本方略，第一条是：___。
A. 坚持全面深化改革
B. 坚持以人民为中心
C. 坚持全面从严治党
D. 坚持党对一切工作的领导
【单选题】
党的十九大报告指出，新时代坚持和发展中国特色社会主义的基本方略指出，坚持全面从严治党，必须以___为根本遵循，把党的政治建设摆在首位。
A. 宪法
B. 党章
C. 党的纪律
D. 党内法规体系
【单选题】
党的十九大报告指出，把___挺在前面，着力解决人民群众反映最强烈、对党的执政基础威胁最大的突出问题。
推荐试题
【单选题】
Which statement about zone-based firewall configuration is true？___
A. You can assign an interface to more than one zone
B. Traffic is implicitly denied by de fault between interfaces in the same zone
C. The zone must be configured before it can be a ssigned
D. Traffic that is destined to or sourced from the Self zone is de nied by default
【单选题】
Refer to the exhibit line in this configuration prevents the help Desk user from modifying the interface configuration.___
A. Privilege exec level 10 interface
B. Privilege exec level 9 configure terminal
C. Privilege exec level 7 show start-up
D. Username HelpDesk privilege 6 password help
【单选题】
You have been tasked with blocking user access to websites that violate company policy， but the sites use dynamic IP addresses. What is the best practice for URl filtering to solve the problem？___
A. Enable URL filtering and use URL categorization to block the we bsites that violate company
B. Enable URL filtering and create a blacklist to block the websites that violate company policy
C. Enable URL filtering and create a whitelist to block the websites that violate company policy
D.
E. nable URL filtering and use URL categorization to allow only the websites that company policy allows users to access.
【单选题】
Within an 802. 1x-enabled network with the auth Fail feature configured， when does a switch port get placed into a restricted VLAN？___
A. When a conected client fails to authenticate after a certain number of attempts.
B. if a connected client does not support 802. 1x
C. when AAA new-model is ena bled
D. after a connected client exceeds a specified idle time
E. when 802. 1x is not globally enabled on the Cisco Catalyst switch
【单选题】
Which type of attack does a proxy firewall protect against ？___
A. cross-site scripting attack
B. worm traffic
C. port scanning
D. DDoS attacks
【单选题】
When an administrator initiates a device wipe command from the ISE， what is the immediate effect？___
A. It requests the administrator to choose between erasing all device data or only managed corporate data.
B. It requests the administrator to enter the device pin or password before proceeding with the operation
C. It notifies the device user and proceeds with the erase operation
D. It immediately erases all data on the device
【单选题】
What is a valid implicit permit rule for traffic that is traversing the ASa firewall？___
A. ARPs in both directions are permitted in transparent mode only
B. Unicast IPv4 traffic from a higher security interface to a lower security interface is permittee in routed mode only.
C. Unicast IPv6 traffic from a higher security interface to a lower security interface is permitted in transparent mode only.
D. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in transparent mode.
E. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in routed mode
【单选题】
A specific URL has been identified as containing malware. What action can you take to block users from accidentally visiting the URl and becoming infected with malware ？___
A. Enable URL filtering on the perimeter router and add the URls you want to block to the router's local URL list
B. Enable URL filtering on the perimeter firewall and add the URls you want to allow to the router's local URL list.
C. Enable URL filtering on the perimeter router and add the URls you want to allow to the firewall's local URL list
D. Create a blacklist that contains the URl you want to block and activate the blacklist on the perimeter rout
E. Create a whitelist that contains the URLs you want to allow and activate the whitelist on the perimeter router.
【单选题】
How does PEAP protect the EAP exchange ？___
A. It encrypts the exchange using the server certificate
B. It encrypts the exchange using the client certificate
C. It validates the server-supplied certificate,and then encrypts the exchange using the client certificate
D. It validates the client-supplied certificate,and then encrypts the excha nge using the server certificate
【单选题】
Which feature of the Cisco Email Security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attacks？___
A. contextual analysis
B. holistic understanding of threats
C. graymail management and filtering
D. signature-based IPS
【单选题】
Refer to the exhibit【nat (inside,outside)dunamic interface】 Which translation technique does this configuration result in？___
A. DynamIc PAT
B. Dynamic NAT
C. Twice NAT
D. Static NAT
【单选题】
Refer to the exhibit which are repre sents the data center？___
【单选题】
While trouble shooting site-to-site VPN， you issued the show crypto isakmp sa command. What does the given output show？___
A. IKE Phase 1 main mode was created on 10.1.1.5， but it failed to negotiate with 10.10 10.2
B. IKE Phase 1 main mode has successfully negotiated between 10.1.1.5 and 10.10..
C. IKE Phase 1 aggressive mode was created on 10.1.1.5， but it failed to negotiate with
【单选题】
Refer to the exhibit All ports on switch 1 have a primary vLan of 300 Which devices can host 1 reach？___
A. host 2
B. server
C. host 4
D. other devices within VLAN303
【单选题】
Which option is the cloud-based security service from Cisco the provides URL filtering， web browsing content security， and roaming user protection？___
A. Cloud Web service
B. Cloud Advanced Malware Protection
C. Cloud We b Security
D. Cloud Web Protection
【单选题】
How can you detect a false negative on an IPS？___
A. View the alert on the ips
B. Review the ips log
C. Review the is console
D. Use a third- party system to perform penetration testing.
E. Use a third- party to audit the next generation firewall rules
【单选题】
If a switch port goes directly into a blocked state only when a superior BPDU is received， what mechanism must be in use？___
A. STP BPDU guard
B. Loop guard
C. EtherChannel guard
D. STP Root guard
【单选题】
what improvement does EAP-FASTv2 provide over EAP-FAST？ ___
A. It allows multiple credentials to be passed in a single EAP exchange.
B. It supports more secure encryption protocols
C. It allows faster authentication by using fewer packets.
D. It addresses security vulnerabilities found in the original protocol
【单选题】
When users login to the Client less Ssl Vpn using https://209.165.201.2/test ,which group policy will be applied？___
A. test
B. clientless
C. sales
D. DfitGrp Policy
E. Default RAGroup
F. Default WEB VPN
G. roup
【单选题】
Which user authentication method is used when users login to the Clientless SSLVPN portal using https://209.165.201.2/test？___
A. AAA with LOCAL database
B. AAA with RADIUS server
C. Certificate
D. :Both Certificate and aaa with LoCAL database
E. Both Certificate and AAA with RADIUS server
【单选题】
What' s the technology that you can use to prevent non malicious program to runin the computer that is disconnected from the network？___
A. Firewall
B. Sofware Antivirus
C. Network IPS
D. Host IPS
【单选题】
Which statement about the communication between interfaces on the same security level is true？___
A. Interfaces on the same security level require additional configuration to permit interinterface communication
B. Configuring interfaces on the same security level can cause asymmetric routing
C. All traffic is allowed by default between interfaces on the same security level
D. You can configure only one interface on a n individual security level
【单选题】
Which product can be used to provide application layer protection for tcp port 25 traffic？___
A. ESA
B. CWS
C. WSA
D. ASA
【单选题】
which iPS mode is less secure than other options but allows optimal network through put ?___
A. inline mode
B. inline-bypass mode
C. transparent mode
D. Promiscuous mode
【单选题】
Which feature of the Cisco Email security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attack？___
A. reputation based filtering
B. signature based IPS
C. contextual analysis
D. graymail management and filtering
【单选题】
Which type of social-engineering attack uses normal tele phone service as the attack vector？___
A. smishing
B. dialing
C. phishing
D. vishing
【单选题】
Which quantifiable item should you consider when you organization adopts new technologies？___
A. exploits
B. vulnerability
C. threat
D. Risk
【单选题】
Referencing the ClA model， in which scenario is a hash- only function most appropriate ？___
A. securing data at rest
B. securing real-time traffic
C. securing data in files
D. securing wireless transmissions
【单选题】
Which ports must be open between a aaa server and a microsoft server to permit Active Directory authentications？___
A. 445 and 389
B. 888 and 3389
C. 636 and 4445
D. 363 and 983
【单选题】
Refer to the exhibit for which reason is the tunnel unable to pass traffic___
A. the tunnel is failing to receive traffic from the remote peer
B. the local peer is unable to encrypt the traffic
C. the ip address of the remote peer is incorrect
D. UDP port 500 is blocked
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
How can you protect CDP from reconnaissance attacks？___
A. Enable dynamic ARP inspection on all untrusted ports.
B. Enable dot1x on all ports that are connected to other switches.
C.
D. isable CDP on ports connected to endpoints.
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which option is a key security compone nt of and MDM deployment ？___
A. using network-specific installer packages
B. using an application tunnel by default
C. using self-signed certificates to validate the server
D. using MS-CHAPv2 as the primary
E. AP method
【单选题】
Which Firepower Management Center feature detects and block exploits and hack attempts？___
A. Content blocker
B. file control
C. intrusion prevention
D. advanced malware protection
【单选题】
hich description of the nonsecret numbers that are used to start a Diffie- Hellman exchange is ture？___
A. They are preconfigured prime integers.
B. They are large pseudorandom numbers.
C. They are very small numbers chosen from a table of known valuses
D. They are numeric values extracted from ha shed system hostnames
【多选题】
Which two characteristics of an application layer firewall are true？___
A. provides stateful firewal functionality
B. has low processor usage
C. provides protection for multiple applications
D. provides rever se proxy services
E. is immune to URL manipulation
【多选题】
Which two devices are components of the BYOD architectural framework？___
A. Nexus 7010 switch
B. Cisco 3945 Router
C. Identify Services Engine
D. Wireless Access oints
E. Prime Infrastructure
【多选题】
Which two actions can a zone based firewall take when looking at traffic？ ___
A. forward
B. inspect
C. drop
D. broadcast
E. filter
【多选题】
n which two situations should you use in-band management？___
A. when management applications need concurrent access to the device
B. when you require administrator access from multiple locations
C. when a network device fails to forward packets
D. when you require ROMMON access
E. when the control plane fails to respond
