【单选题】
25.电厂给水采用联合处理(CWT)时，pH值应控制在( )。
(A) 6.5-7.5； (B) 7.0-8.0； (C) 8.3-8.6； (D) 8.6-9.3
A. 6.5-7.5
B. 7.0-8.0
C. 8.3-8.6
D. 8.6-9.3
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相关试题
【判断题】
1.微电池腐蚀中，遭到腐蚀的是阳极。( )
【判断题】
2.水冷导线内结水垢愈厚，发电机线棉温度愈低。
【判断题】
3.锅炉充复保护时，应从底部进复，这样有利于排空气。( )
【判断题】
4.反渗透CA膜对离子价数愈高的电解质，除盐效果愈差。( )
【判断题】
5.一般，树脂含水量的变化可以作为一个侧面反映出树脂内在质量的变化。( )
【判断题】
6.单流式过滤器滤料不均匀系数应小于2,双流式过滤器滤料不均匀系数应大于3。( )
【判断题】
7.循环水的脱碳对循环冷却水系统是有益的。( )
【判断题】
8.交换容量大是大孔型弱酸性树脂的主要优势。( )
【判断题】
9.爆炸下限越低的可燃物，越有爆炸的危险。( )
【判断题】
10.再生液浓度愈高，再生愈彻底。( )
【判断题】
11.为防止造成阳离子交换树脂的损坏，要求进水中含氯量小于0. 1mg/L。( )
【判断题】
12.在双层床中，两种树脂的分层愈完全，则运行周期愈长。( )
【判断题】
13.为了处理给水中的残余硬度，防止锅炉结垢，所有锅炉都可采用协调磷酸盐处理。( )
【判断题】
14.电渗析发生极化现象后，设备的电阻大大增加，电流效率显著升高。( )
【判断题】
15.无阀滤池空池启动时，应从进水管正常进水。（ ）
【判断题】
16.离子交换器反洗的主要目的是松动树脂。( )
【判断题】
17.速流再生固定床再生时，当再生液进完后，应立即大流量冲洗。
【判断题】
18.浮动床运行到失效时，上层树脂完全失效。( )
【判断题】
19.发电的转动设备和电气元件者火时，不准使用沙士火火。( )
【判断题】
20.电厂生产用水是为了维持热力循环正常用水循环所需要的补充水。( )
【判断题】
21.反渗透装置的透水率或流通量，指单位时间内通过单位膜面积的液体量。( )
【判断题】
22.火力发电厂的汽水系统由锅炉、汽轮机、凝汽器、凝结水泵、高低压加热器、除氧器及给水泵等组成。( )
【判断题】
23.反渗透装置的透水率随进水中杂质含量增加而增大。
【判断题】
24.中性水加氧工况是一种使凝结水——给水系统中的高纯水保持中性(pH值为6.5~7.5， 电导率<0.15uS/cm)，并添加适量氧化剂(O2或H2O2)的水化学工况。( )
【判断题】
25.采用凝结水精处理的电厂，适合使用碱性水工况。( )
【简答题】
2.影响逆流再生固定床再生效果的因素有哪些？
【简答题】
3.在阴双层床中，为什么胶态硅化合物从弱碱阴树脂层中析出？
【简答题】
4.在稀溶液中，阳离子交换的选择性顺序有哪些规律？
【简答题】
7.给水加氨处理对凝结水精处理混床有何影响？
【简答题】
计算题:
1.在水汽试验方法中，氨缓冲溶液的配制方法是:称取20g氯化铵溶于500mL的高纯水中，加人150mL的浓氨水，然后用高纯水稀释到1L,求此缓冲溶液的pH值为多少?
(氨水p=0.90g/mL,A= 26%，M= 17.0；氯化铵M=53.5；pKb=4.75)
【简答题】
计算题:
2.一台阳离子交换器人口水碱度JD = 3.6mmol/L，出口水酸度SD = 2.2mmol/L，周期制水量V = 1600m3，再生时用w=31%到底工业盐酸1304L，求此阳离子交换器的再生酸耗R。（PHCl=1.15kg/L)
【简答题】
电厂水处理技师技能要求试卷
一、调整试验
1.根据本厂情况制定一份澄清器的调整试验方案。
【简答题】
电厂水处理技师技能要求试卷
2.根据本厂情况制定一份离子交换器的调整试验方案。
【简答题】
电厂水处理技师技能要求试卷
二、安全排障
1.纸粉覆盖过滤器爆膜不干净是何原因？应如何处理？
【简答题】
电厂水处理技师技能要求试卷
二、安全排障
2.试述混床再生操作的注意事项。
【简答题】
电厂水处理技师技能要求试卷
三、分析表达
1.叙述阴床、阳床运行直至失效时的各项水质指标的变化。
【单选题】
每个矿井至少应有___个独立直达地面的安全出口，间距不小于30m。
推荐试题
【单选题】
What configuration is required for multitenancy ?___
A. shared infrastructure
B. multiple carriers
C. co-located resources
D. multiple separate zones
【单选题】
Why does ISE require its own certificate issued by a trusted CA？___
A. ISEs certificate allows guest devices to validate it as a trusted network device
B. It generates certificates for guest devices ba sed on its own certificate
C. It requests certificates for guest devices from the Ca server based on its own certificate.
D. ISE's certificate allows it to join the network security framework
【单选题】
which attack involves large numbers of ICMP packets with a spoofed source IP address？___
A. smurf attack
B. Teardrop attack
C. Nuke attack
D. SYN Flood attack
【单选题】
Which statement about interface and global access rules is true？___
A. Interface access rules are processed before global access rules.
B. Global access rules apply only to outbound traffic， but interface access rules can be applied in either direction
C. The implicit allow is proce ssed after both the global and interface access rules
D. If an interface access rule is applied， the global access rule is ignored
【单选题】
Which type of malicious software can create a back-door into a device or network？___
A. bot
B. worm
C. virus
D. Trojan
【单选题】
Which security term refers to the like lihood that a weakness will be exploited to cause damage to an asset？___
A. threat
B. risk
C. countermeasure
D. vulnerability
【单选题】
Which IPS detection method examines network traffic for preconfigured patterns？___
A. signature-based detection
B. honey-pot detection
C. anomaly-based detection
D. policy-based detection
【单选题】
What is an advantage of split tunneling ？___
A. It allows users with a VpN connection to a corporate network to access the internet with sending traffic across the cor porate network.
B. It allows users with a vpn connection to a corporate network to access the internet by using the vPN for security.
C. It protects traffic on the private network from users on the public network
D. It enables the VPN server to filter traffic more efficiently
【单选题】
Which IDS/IPS state misidentifies acceptable behavior as an attack ？___
A. false negative
B. true positive NEKA G
C. true negative
D. false positive
【单选题】
What is the maximum num ber of methods that a single method list can contain？___
【单选题】
Which command enables authentication at the oSPFv2 routing process level？___
A. ip ospf authentication message-digest
B. area 0 authentication message-digest
C. ip ospf message-digest-key 1 mds Cisco
D. area 0 authentication ipsec spi 500 md5 1234567890ABCDEF1234567890ABCDEF
【单选题】
Which type of firewall monitors a nd protects a specific system？___
A. firewall
B. application firewall
C. stateless firewall wvp
D. personal firewall
【单选题】
On an ASA， which maps are used to identify traffic？___
A. Route maps
B. Policy maps
C. Class maps
D. Service maps
【单选题】
Which type of social engineering attack targets top executives？___
A. whaling
B. vishin
C. spear phishing ng
D. baiting
【单选题】
What is the minimum Cisco lOS version that supports zone-based firewalls？___
A. 12.1T
B. 15.1
C. 15.0
D. 124
【单选题】
In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
A. DHCP spoofing
B. ARP spoofing
C. CAM table overflow
D. MAC spoofing
【多选题】
Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
E. VLAN hopping
【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
【多选题】
choose four___
A. Step1————————run the system setup wizard
B. Step2————————add an authentication realm
C. Step3————————configure identity management
D. Step4————————configure directory group
【多选题】
What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
D. reputation
E. reflection
【多选题】
Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
C. It uses UDP ports 1812/1813.
D. It uses UDP port 49
E. It uses TCP port 49
【多选题】
What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
【多选题】
What are two default be haviors of the traffic on a zone-based firewall？___
A. Traffic within the self -zone uses an im plicit deny all.
B. All traffic between zones is implicitly blocked
C. Communication is allowed between interfadAss that are members of the same zone
D. Communication is blocked between interfaces that are members of the same zone
E. The CBAC rules that are configured on router interfaces apply to zone interfaces
【多选题】
Which two advantages does the on-premise model for MDM deployment have over the cloud-based model？___
A. The on-premise model is easier and faster to de ploy than the cloud-based model
B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
【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
