相关试题
【单选题】
二灰量指以下哪两种材料（ ） 。 ___
A. 水泥、石灰
B. 石灰、粉煤灰
C. 水泥、粉煤灰
D. 石灰、煤渣
【单选题】
先张法预应力混凝土梁的预应力是通过（ ）来传递并保持的。___
A. 锚具
B. 张拉
C. 预应力筋与砼的粘接
D. 控制
【单选题】
电孤焊和绑扎接头不宜位于构件的（ ）。___
A. 最小弯矩处
B. 最大弯矩处
C. 最大拉力处
D. 最大压力处
【单选题】
被同一箍筋所箍的纵向受力钢筋根数，在构件的每边上应不多于（ ）。___
A. 5根
B. 4根
C. 3根
D. 6根
【单选题】
预应力筋张拉后，孔道压浆时的水泥浆稠度宜控制在（ ）。___
A. 6-8秒
B. 14-18秒
C. 18-20秒
D. 20-25秒
【单选题】
不同类型土分层填筑时，一种土最小填筑厚度为（）。___
A. 30cm
B. 40cm
C. 50cm
D. 60cm
【单选题】
特大桥梁测量控制网应（ ）复测一次 。___
A. 半年
B. 一年
C. 一年半
D. 二年
【单选题】
桥梁所受的荷载中，水浮力属于（ ）___
A. 可变荷载
B. 永久荷载
C. 偶然荷载
D. 瞬时荷载
【单选题】
吊桥的主要承重结构是（ ）。___
A. 桥面
B. 缆索
C. 桥台
D. 桥身
【单选题】
柔性路面施工时初期碾压应采用（ ）压路机。___
A. 重型
B. 中型
C. 轻型
D. 振动
【单选题】
大跨桥梁设计的阶段划分为（ ）。___
A. 初步设计、结构设计、施工设计
B. 初步设计、技术设计、施工图设计
C. 方案设计、结构设计、施工设计
D. 方案设计、技术设计、施工设计
【单选题】
混凝土的坍落度主要反映混凝土的（ ）。___
A. 和易性
B. 抗渗性
C. 干缩性
D. 凝聚性
【单选题】
( )需要进行反复冷弯试验。___
A. 高强钢丝
B. 钢绞线
C. 细钢筋
D. 粗钢筋
【单选题】
路基支挡结构物应包括( )。___
A. 挡墙、护肩、护坡、护面墙
B. 挡墙、护肩、护坡
C. 护面墙、护肩、护坡
D. 挡墙、边坡、边沟
【单选题】
梁式桥的支座一般分为( )和固定式两种。___
A. 移动
B. 活动
C. 切线式
D. 板式
【单选题】
水泥混凝土路面中，要求水的PH值( )。___
A. 大于4
B. 大于6
C. 小于4
D. 小于3
【单选题】
路基干湿类型划分为（ )。___
A. 二类
B. 三类
C. 四类
D. 五类
【单选题】
环刀法测定压实度时，环刀取样位臵应位于压实层的( )。 ___
A. 上部
B. 中部
C. 底部
D. 任意位置
【单选题】
对土方路基质量评定影响最大的指标是( )。___
A. 压实度
B. 平整度
C. 宽度
D. 高度
【单选题】
对水泥稳定类基层，土的液限不宜超过( )。 ___
A. 0.2
B. 0.25
C. 0.3
D. 0.35
【单选题】
在选用模板时，宜优先选用（ )。___
A. 钢模板
B. 组合模板
C. 木模板
D. 自制模板
【单选题】
桥梁的四大部分是指上部、下部、( )和调治构筑物。___
A. 桥台
B. 基础
C. 护坡
D. 支座
【单选题】
施工组织合理可靠与否，关键是看其是否满足连续、协调、均衡与( )的原则。___
A. 经济
B. 高效
C. 高质量
D. 以上均不对
【单选题】
（ ）所用粗骨料除进行压碎指标试验外，对碎石尚应进行岩石立方体抗压强度试验。___
A. 抗冻混凝土
B. 高强混凝土
C. 抗渗混凝土
D. 大体积混凝土
【单选题】
波形梁护栏属于( )。___
A. 刚性护栏
B. 半刚性护栏
C. 柔性护栏
D. 一般护栏
【单选题】
多孔跨径总长Ld=60m的桥梁属于（ ）。___
A. 小桥
B. 中桥
C. 大桥
D. 特大桥
【单选题】
梁桥桥跨结构两支座中心间的距离为（ ）。___
A. 标准跨径
B. 计算跨径
C. 实际跨径
D. 通航跨径
【单选题】
桥梁建筑高度是指（ ）。___
A. 行车路面至桥墩（台）基础底面的距离
B. 行车路面至墩（台）帽顶面间的距离
C. 桥面上栏杆柱的上端至上部结构最低边缘间的距离
D. 行车路面至桥跨结构最下缘间的距离
【单选题】
当通航孔径小于经济跨径时，应按（ ）布置桥孔。___
A. 计算跨径
B. 经济跨径
C. 通航跨径
D. 标准跨径
【单选题】
公路桥梁行车道宽度取决于（ ）。___
A. 计算跨径
B. 车辆类型
C. 设计速度
D. 桥梁类型
【单选题】
为了迅速排除面雨水，混凝土桥面铺装层的表面应做成（ ）的横坡。___
A. 0.3%-0.5%
B. 1%-1.5%
C. 1.5%-2%
D. 3%-5%
【单选题】
钢筋混凝土板桥承重结构是矩形板，它突出的优点是（ ）。___
A. 构造简单，施工方便，建筑高度小
B. 构件体积小，材料用量节省
C. 能充分发挥钢筋和砼的作用
D. 能使桥面平整，行车平顺
【单选题】
对于既承正弯矩，又承受负弯矩的较大跨径悬臂板和连续梁桥，其承重结构往往采用（ ）。___
A. 实心板
B. 空心板
C. 肋梁
D. 箱梁
【单选题】
装配式梁式桥的优点之一是（ ）。___
A. 整体性好
B. 可节约钢筋和砼量
C. 上部结构与下部结构同时施工
D. 相邻构件铰接，可转动
【单选题】
整体浇筑的钢筋混凝土板桥承重板中，若只配置主钢筋和分布钢筋，则分布钢筋通常布置在主钢筋的（ ）。___
A. 上面
B. 下面
C. 内侧
D. 外侧
【单选题】
钢筋混凝土T形梁的主梁肋配置纵向水平钢筋的目的，主要是为了防止由于（ ）产生的裂缝。___
A. 压应变过大
B. 拉应变过大
C. 砼收缩
D. 砼徐变
【单选题】
装配式钢筋混凝土简支T形梁跨中部分下方做成马蹄形截面，其目的是（ ）。 ___
A. 便于布置预应力钢筋
B. 增加梁的稳定性
C. 承受梁跨中的正弯矩
D. 增加构件的美观
【单选题】
所有钢筋接头都不宜位于（ ）。___
A. 最大弯矩处
B. 最大剪力处
C. 最大轴心压力处
D. 最大扭矩处
【单选题】
夏季预应力混凝土施工时，抽拔制孔器的时间为：（ ）。___
A. 10小时
B. 3小时
C. 20小时
D. 8小时
【单选题】
预应力钢筋超张拉的目的是（ ）。___
A. 检验张拉机具的可靠性
B. 检验钢筋的抗拉强度
C. 增加张拉控制应力σk值
D. 减少预应力钢筋的松驰等因素引起的预应力损失
推荐试题
【单选题】
Which statement about command authorization and security contexts is true？___
A. If command authorization is configured， it must be enabled on all contexts.
B. The change to command invokes a new context session with the credentials of the currently
C. AAA settings are applied on a per-context basis
D. The enable. 15 user ang admins with chang to permission ha e dfferent command authorization levels pertontext
【单选题】
Which command do you enter to enable authentication for OSPF on an interface？___
A. router（config-if）#ip ospf message-digest-key 1 md5 CIS COPASS
B. router（config-if）#ip ospf authentication message-digest
C. router（config-if）#ip ospf authentication-key CISCOPASS
D. router（config-if）#area 0 authentication message-digest
【单选题】
What feature defines a campus area network？___
A. It has a single geographic location
B. It lacks external connectivity.
C. It has a limited number of segments.
D. It has limited or restricted Internet access
【单选题】
Which type of attack most commonly involves a direct attack on a network？___
A. :phishing
B. Trojan horse
C. denial of service
D. social engineering
【单选题】
What information does the key length provide in an encryption algorithm?___
A. the cipher block size
B. the hash bloc k size
C. the number of permutations
D. the packet size
【单选题】
How do you verify TaCACS+ connectivity to a device？___
A. You successfully log in to the device by using the local credentials
B. You connect via console port and receive the login prompt.
C. You connect to the device using SSH and receive the login prompt.
D. You successfully log in to the device by using ACS credentials
【单选题】
Which term best describes the concept of preventing the modification of data in transit and in storage？___
A. availability
B. confidentially
C. fidelity
D. integrity
【单选题】
Which loS command is used to define the authentication key for ntp？___
A. switch（config ）#ntp authentication-key 1 mds Clcs
B. switch（config ）#ntp authenticate
C. switch（config）#ntp trusted-key 1
D. switch（config）#ntp source 192.168.0.1
【单选题】
What is true about the cisco lOS Resilient Configuration feature ?___
A. The feature can be disabled through a remote session
B. There is additional space required to secure the primary cisco lOS image file.
C. The feature automatically detects image or configuration version mismatch.
D. Remote storage is used for securing files
【单选题】
When is the default deny all policy an exception in zone-based firewalls？___
A. when traffic terminates on the router via the self zone
B. when traffic traverses two interfaces in different zones
C. when traffic traverses two interfaces in the same zone
D. when traffic sources from the router via the self zone
【单选题】
.If an access port is assigned as an isolated port in a PVLAN， which network ports can it communicate with？___
A. promiscuous ports in the same PLVAN
B. isolated ports in the same PVLAN
C. all ports in the same PAVLAN at ILAR
D. all ports in the adjacent PVLAN
【单选题】
Which IPSEC mode is used to encypt traffic directly between a client and a server VPN endpoint？___
A. quick mode
B. transport mode
C. aggressive mode
D. tunnel mode
【单选题】
Which command do you enter to verify that a vpn connection is established between two endpoints and that the connection is passing traffic？ ___
A. Firewall#sh crypto session
B. Firewall#debug crypto isakmp
C. Firewall#tsh crypto ipsec sa
D. Firewall#sh crypto isakmp sa
【单选题】
which type of Pvlan port allows communication from all port types？___
A. isolated
B. in -line
C. community
D. promiscuous
【单选题】
Which command do you enter to configure your firewall to conceal internal addresses？___
A. no ip directed-broadcast
B. no ip logging facility
C. no proxy-arp
D. no ip inspect audit-trial
E. no ip inspect
F. route
【单选题】
Which feature defines a campus area network？ ___
A. It has a limited number of segments.
B. It has limited or restricted Internet access
C. It lacks ex1ternal connectivity.
D. It has a single geographic location
【单选题】
What technology can you use to provide data confidentiality data integrity and data origin authentication on your network？___
A. IPSec
B. Certificate Authority
C. IKE
D. Data
E. ncryption Standards
【单选题】
which standard is a hybrid protocol that uses oakley and skerne ke y exchanges is an ISAKMP framework？___
【单选题】
What is the actual los privilege level of User Exec mode？___
【单选题】
What is the effect of the asa command crypto isakmp nat-traversal？___
A. It opens port 500 only on the out side interface
B. It opens port 500 only on the inside interface
C. It opens port 4500 on all interfaces that are IPSec enabled
D. It opens port 4500 only on the out side interfac
【单选题】
Which Fire POWER preproce ssor engine is used to prevent SYN attacks？___
A. Inline normalization
B. IP Defragmentation
C. Ports can
D. etection
【单选题】
Which NAT type allows objects or groups to reference an IP address ？___
A. identity NAt
B. static NAT
C. dynamic
D. dynamic NAT
【单选题】
Which Auto NAT policies are processed first？___
A. Dynamic NAT with longest prefix
B. Dynamic NAT with shortest prefix
C. static NAT with longest prefix
D. static NAT with shortest prefix
【单选题】
Which feature allows a dynamic Pat pool to se lect the next address in the pat pool instead of the next port of an existing address？___
A. next IP
B. round robin
C. dynamic rotation
D. NAT address rotation
【单选题】
Which IPS detection method can you use to detect attacks that are based on the attackers IP address？___
A. anomally-based
B. policy-based
C. signature-based
D. reputation-based
【单选题】
Which type of encryption technology has the broadest platform support？___
A. software
B. middleware
C. file-level
D. hardware
【单选题】
Which type of address translation supports the initiation of comm unications bidirectionally ？___
A. multi-session PAT
B. dynamic NAT
C. dynamic PAT
D. static NAT
【单选题】
Which label is given to a person who uses existing computer scripts to hack into computers while lacking the expertise to write the own？___
A. script kiddy
B. white hat hacker
C. hacktivist
D. phreaker
【单选题】
What is the primary purpose of a defined rule in an IPS？___
A. to configure an event action that takes place when a signature is triggered
B. to define a set of actions that occur when a specific user logs in to the system
C. to configure an event action that is pre-defined by the system administrator
D. to detect internal attacks
【单选题】
Which option is the default valuce for the Diffie- Hell man group when configuring a site-to-site VPn on an asa device ？___
A. Group 1
B. Group 2
C. Group 5
D. Group 7
【单选题】
Which feature filters CoPP packets?___
A. access control lists
B. class maps
C. policy maps
D. route maps
【单选题】
Which command is used in global configuration mode to enable AAA？___
A. configure-model aaa
B. configure aaa-modelA
C. aaa new-model
D. aaa
E. XEC
【单选题】
Which statement about the given configuration is true？___
A. The single-connection command causes the device to establish one connection for all TACACS
B. The single-connection command causes the device to process one TacAcs request and then move to the next server
C. The timeout com mand causes the device to move to the next server after 20 seconds of TACACS inactive
【多选题】
What are two well-known security terms？___
A. phishing//网络钓鱼
B. ransomware //勒索软件
C. BPDU guard
D. LACP
E. hair-pinning
【多选题】
Which two commands must you enter to securely archive the primary bootset of a device___
A. router（config ）#secure boot-config
B. router（config）#auto secure
C. router（config）#secure boot-image
D. router（config）#service passw ord-encryption
【多选题】
Which two functions can SIEM provide ？___
A. correlation between logs and events from multiple systems
B. event aggregation that allows for reduced log storage requirements
C. proactive malware analysis to block malicious traffic
D. dual-factor authentication
E. centralized firewall management
【多选题】
Which two features of Cisco Web Reputation tracking can mitigate web-based threats？___
A. buffer overflow filterin dhsuowip
B. Bayesian filters
C. web reputation filters
D. outbreak filtering
E. exploit filtering
【多选题】
What are two challenges when deploying host- level IPS？ ___
A. The deployment must support multiple operating systems.
B. It is unable to provide a complete networ k picture of an attack.
C. It is unable to determine the outcome of e very attack that it detects
D. It does not provide protection for offsite computers
E. It is unable to detect fragmentation attacks
【多选题】
Which technology can be used to rate data fidelity and to provide an authenticated hash for data?___
A. file reputation
B. file analysis
C. signature updates
D. network blocking
【多选题】
Which two statements about host-based iPS solutions are true？___
A. It uses only signature-based polices
B. It can be deployed at the perimeter.
C. It can be have more restrictive policies than network-based IPS
D. it works with deployed firewall
E. It can generate alerts based on be havior at the de sto
