【单选题】
安装钻机探水前，应加强钻场前、后___米范围内的巷道支护，并打好坚固的立柱和栏板，安全通道要畅通。
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相关试题
【单选题】
老空和钻孔位置不清楚时，探水钻孔成组布设，并在巷道前方的水平面和竖直面内呈扇形，钻孔终孔位置满足水平面间距不得大于___m，厚煤层内各孔终孔的竖直面间距不得大于1.5m。
【单选题】
探放断裂构造水和岩溶水等时，探水钻孔沿掘进方向的正前方及含水体方向呈扇形布置，钻孔不得少于___个，其中含水体方向的钻孔不得少于2个。
【单选题】
正常涌水量<1000立方/每小时，主要水仓的有效容积应能容纳___小时的正常涌水量。
【单选题】
煤矿井口和工业场内建筑物的工程必须 ___ 于当地历年最高洪水位。
【单选题】
水文地质条件复杂的煤矿企业，必须设立___煤矿防治水机构。
A. 专门的
B. 兼职的
C. 主管的
D. 以上均可
【单选题】
矿井水文地质中等型矿井正常涌水量Q1___m³/h。
A. Q1≤180
B. 180＜Q1≤600
C. 600＜Q1≤2100 m³/h
D. Q1＞2100
【单选题】
矿井水平涌水量观测站每___观测1~3次。
【单选题】
在矿井采掘工程图上有可能发生水害的部位用___颜色标上水害类型符合。
【单选题】
矿井偶有突水，采掘工程受水害影响，但不威胁矿井安全，应将水文地质类型划分至___类型。
【单选题】
在正常涌水量情况下，工作水泵应能在___小时内排出矿井24小时的正常涌水量。
【单选题】
煤矿井下发生透水事故后，现场作业人员应首先直接向___报告。
A. 采掘区队长
B. 矿调度室
C. 采掘区队值班人员
D. 矿地测科
【单选题】
探放水钻孔除兼作堵水钻孔外，终孔孔径一般不得大于___mm。
A. 75
B. 94
C. 113
D. 133
【单选题】
注浆加固底板或者改造含水层结束后，由煤炭企业总工程师组织效果评价。注浆改造后，突水系数不得大于___MPa/m。
A. 0.05
B. 0.06
C. 0.1
D. 0.12
【单选题】
矿井必须规定避水灾路线，巷道交叉口必须设置标识，采区巷道内标识间距不得大于___m。
A. 50
B. 100
C. 150
D. 200
【单选题】
___不是透水预兆。
A. 挂红
B. 煤壁变冷
C. 掉渣
D. 水叫
【单选题】
在打钻地点___m范围内安设专用电话，专线专号，不得与其他施工单位共用。
【单选题】
根据每年的采掘接续计划，结合矿井水文地质资料，全面分析水害隐患，提出水害___。
A. 预测预报
B. 地质预报
C. 瓦斯预报
D. 分析预测表及水害预测图
【单选题】
矿井透水后人员撤退路线出现冒顶或涌水堵塞去路时，应该___。
A. 冒险爬到冒落空间通过
B. 强行潜水逃出
C. 选择安全地点暂避待救
【单选题】
钻孔接近老空、预计可能有瓦斯或其他有害气体涌出时，必须有瓦斯检查工或___在现场值班，检查空气成分。
A. 队长
B. 矿山救护队员
C. 安全员
D. 技术员
【单选题】
上盘相对上升，下盘相对下降的断层是___。
【单选题】
水文地质条件复杂、极复杂的矿井，当开拓到设计水平，只有在建成___系统后，方可开始向有突水危险地区开拓掘进。
【单选题】
水压较高区域大型断层水害防治技术一般采用 ___。
A. 加强支护
B. 留设防水煤柱
C. 疏水降压
【单选题】
___往往是疏干降压或截源堵截水等防治水措施合理制订的先行步骤和重要依据。
【单选题】
预计水压较大的地区探水时，探水钻进之前，必须先安好___和控制闸阀，进行耐压试验，达到设计承受的水压后，方准继续钻进。
【单选题】
老窑水以___为主，一旦发生突水，可以在短时期内造成大量的水突入矿井，往往可能造成较大的灾害。
【单选题】
水仓、沉淀池和水沟中的淤泥，应及时清理，每年雨季前必须清理___次。
【单选题】
矿井透水后人员撤退路线出现冒顶或涌水堵塞去路时，应该___
A. 冒险爬到冒落空间通道
B. 强行潜水逃出
C. 选择安全地点暂避带救
【单选题】
探水或接近积水地区掘进前或排放被淹井巷的积水前，必须编制___，并采取防止瓦斯和其他有害气体危害等安全措施。
【单选题】
含水层或老空积水影响安全开采时，必须___水，并建立疏通排水系统。
【单选题】
承压含水层与开采煤层之间的隔水层能承受的水头值大于实际水头值时，可以___，但必须制订安全措施,报企业主要负责人审批。
A. 增水压开采
B. 带水压开采
C. 减水压开采
【单选题】
井下主要排水设备的备用水泵中能力应不小于工作水泵能力的___%。
【单选题】
防水闸门硐室和护碹必须采用___进行注浆加固。
【单选题】
防水闸门来水一侧15～25m处，应加设一道挡物___。
【单选题】
水文地质条件复杂或有突水淹井危险的矿井，必须在井底车场周围设置___。
【单选题】
当老窑积水与地表水、强充水含水层存在水力联系且有较大的经常性补给水量时，应防绕流和渗漏，采取___的策略。
【单选题】
打钻时，如钻孔内水的压力很大，应马上将___，切匆移动或拔钻，钻机后面不要站人，以免高压水将钻杆顶出伤人或造成透水事故。
【单选题】
老空水积水时间较长，水循环条件差，水中含有大量H2S气体，并多为___。
A. 酸性
B. 中性水
C. 碱性水
D. 浑水
【单选题】
天然充水水源不包括___。
A. 地表水
B. 大气降水
C. 老空水
D. 含水层水
推荐试题
【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
【多选题】
What are two ways to prevent eavesdropping when you perform device management tasks？___
A. Use an SSH connection.
B. Use SNMPv3
C. Use out-of-band management
D. Use SNMP
E. Use in-band management
【多选题】
Which two features are commonly used CoPP and CPPr to protect the control plane？ ___
A. QoS
B. traffic classification
C. access lists
D. policy maps
E. class maps
F. Cisco Express Forwarding
【多选题】
Which four tunne ling prot ocols are enabled in the Dfit GrpPolicy group policy ？___
A. Clientless SSL VPN
B. SSL VPN Client
C. PPTP
D. L2TP/IPsec
E. IPsec IKEv1
F. IPsec IKEv2
【多选题】
Which two statements regarding the aSA VPN configurations are correct？___
A. The asa has a certificate issued by an external certificate authority associated to the ASDM TrustPoint1
B. The Default WEBVPNGroup Connection Profile is using the aaa with RADIUS server method
C. The Inside-srvbook mark references the https://192.168.1.2url
D. Only Clientless SSL VPN access is allowed with the Sales group policy
E. Any Connect， IPSec IKEv1， and IPSec IKEv2 VPN access is enabled on the outside interface
F. The Inside -SRV bookmark has not been applied to the Sales group policy
【多选题】
Which three ESP fields can be encrypted during transmission？___
A. Security Parameter Index
B. Sequence Number
C. MAC Address
D. Padding
E. Pad length
F. Next Header
【多选题】
.Which three statements de scribe DHCP spoofing attacks？___
A. They can modify traffic in transit.
B. They are used to perform man- in-the-middle attacks
C. They use ARP poisoning
D. They can access most network devices
E. They protect the ide ntity of the attacker by masking the DHCP address.
F. They are can physically modify the network gateway.
【多选题】
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
【多选题】
In which two situations should you use in band management？ ___
A. when the control plane fails to respond
B. when you require administrator access from multiple locations
C. when you require ROMMON access.
D. where a network device fails to forward packets
E. when multiple ma nagement applications need concument access to the device.
【多选题】
Which two features are supported in a VRF-aware softwar infrastructure before VRF-lite?___
A. multicast
B. fair queuing
C. WCCP
D.
E. IGRP
【多选题】
.Which loS command do you enter to test authentication again a AAA server？___
A. dialer aaa suffix <suffix> password <password>
B. ppp authentication chap pap test
C. test aaa-server authentication dialer group user name <user> password <password>
D. aaa authentication enable default test group tacases
【多选题】
Which two statements about the self zone on a cisco Xone based policy firewall are true？___
A. Multiple interfaces can be assigned to the self zone
B. it supports stateful inspections for multicast traffic
C. zone pairs that include the self zone apply to traffic transiting the device.
D. it can be either the source zone or the destination zone
E. traffic entering the self zone must match a rule
【多选题】
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 type of firewall can server as the interme diary between a client and a server ?___
A. Stateless firewall
B. application firewall
C. proxy firewall
D. personal firewall
【单选题】
What is the highest security level that can be configured for an interface on an ASA？___
【单选题】
Which term refers to the electromagnetic interference that can radiate from network cables？___
A. Gaussian distributions
B. Doppler waves
C. emanations
D. multimode distortion
【单选题】
How does a zone pair handle traffic if the policy de fination of the zone pair is missing?___
A. It inspects all traffic.
B. It drops all traffic.
C. It permits all traffic wihtout logging
D. It permits and logs all traffic
【单选题】
default how does a zone based firewall handle traffic to add from the self zone？___
A. It permits all traffic without inspection
B. It inspects all traffic to determine how it is handled
C. It permits all traffic after inspection
D. It frops all traffic
【单选题】
Which command should beused to ena ble AAA Authentication to determine if a user can access the privilege command level？___
A. aaa authentication enable local
B. aaa authentication enable level=
C. aaa authentication enable method de fault
D. aaa authentication enable defa ult local
【单选题】
On an ASA， the policy indicates that traffic should not be translated is often referred to as which of the following？___
A. NAT zero
B. NAT forward
C. NAT nul
D. NAT allow
【单选题】
Which protocol offers data Integrity encryption， authentication， and anti-replay functions for IPSec VPN？___
A. ESP protocol
B. IKEv3 Protocol
C. AH protoco
D. IKEv1 Protocol
【单选题】
Which component offers a variety of security Solution， including firwall， IF Antivirus and antiphishing features？___
A. Cisco loS router
B. Cisco ASA 5500 Ser ies security appliance
C. Cisco ASA 5500 X series Next Gen Security appliance
D. Cisco 4200 series IPS appliance
【单选题】
Refer to the exhibit， A Network Secur ity administrator check the ASa firewall NAT policy table rith show nat command， which statement is fails？___
A. There are only reverse translation matches for the REAL SERvER object
B. First policy in the Section 1 is a dynamic nat entry defined in the object configuration
C. NAT policy in section 2 is static entry de fined in the object configuration
D. Translation in Section 3 used when a connection does not matches any entries in first two sections
