【单选题】
理论上双吸式叶轮的轴向推力___。
A. 较大;
B. 比单吸式叶轮还大;
C. 等于零;
D. 较小。
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答案
C
解析
暂无解析
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油隔离泵输送灰浆的特点是___。
A. 扬程高,浓度高;
B. 扬程高,浓度低;
C. 扬程低,浓度低;
D. 扬程低,浓度高。
【单选题】
两台泵串联运行时,总扬程等于___。
A. 两台泵扬程之差;
B. 两台泵扬程之和;
C. 两台泵扬程的平均值;
D. 两台泵扬程之积。
【单选题】
串联运行时,总流量等于___。
A. 各泵流量之和;
B. 各泵流量之差;
C. 各泵流量之积;
D. 其中任意一台泵的流量。
【单选题】
当泵的___不够时,需要进行并联运行。
A. 扬程;
B. 功率;
C. 效率;
D. 流量。
【单选题】
备用泵与运行泵之间的连接为___。
A. 串联;
B. 并联;
C. 备用泵在前的串联;
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【单选题】
浓缩池中灰浆的浓缩是依靠___作用。
A. 沉淀;
B. 过滤;
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【单选题】
电接点压力表用来___。
A. 测量瞬时压力值;
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流态化仓泵适用于___输送。
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用兆欧表摇测设备绝缘时,如果摇表的转速不均匀(由快变慢),测得结果与实际值比较___。
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装于除尘器和烟道底部的灰斗下面,用来清除灰斗中细灰的设备是___。
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D. 捞渣机。
【单选题】
灰渣泵是一种___泵。
A. 容积;
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气锁阀系统属于___系统。
A. 正压;
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【单选题】
液态排渣炉适合燃烧___的燃料。
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【单选题】
排灰系统启动应在___进行。
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【单选题】
对槽形板振打装置,应按设计要求定时振打,或依据具体情况振打,但每值至少应振打___次。
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【单选题】
罗茨风机是___设备。
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【单选题】
灰渣泵正常输渣时,如遇突然停电,应立即___。
A. 关闭出口门;
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【单选题】
离心泵试验需改变工况时,输水量靠___来改变。
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【单选题】
效率试验时,泵的轴功率为___。
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【单选题】
为利于灰渣流动,灰沟要有一定坡度,一般规定坡度不得小于___。
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锅炉冷渣斗水封的作用是___。
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脱离现场___个月以上,在恢复工作前要进行安全及运行规程的考试,考试合格后方可安排工作。
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灰浆泵出口门关闭时,运转时间不应过长,否则___。
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两台泵串联运行时,对其强度要求是___。
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齿轮传动的效率可达___。
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水力除灰中的漂珠是指颗粒直径为0.3200μm,比重___的空心玻璃体微珠。
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调试振打装置,停运后检查各锤头是否敲击在相应的砧子上,其轴向偏差不应大于___mm。
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【多选题】
Drag the recommendation on the left to the Cryptographic algorithms on the right, Options will be used more than once.___
A. Avoid——————————————DES,MD5
B. Legacy——————————————SDES,SHA1,HMAC-MD5
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Which two are valid types of vLans using PVLANS ?___
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Which two commands are used to implement Resilient lOS Configuration ___
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【多选题】
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D.
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When using the Adaptive Security Device Manager(ASDM), which two options are available to add a new root certificate?___
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Which two SNMPv3 services support its capabilities as a secure networ k manage protocol? ___
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Which two statements about routed firewall mode are true ?___
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Which two statements describe DHCP spoofing attacks?___
A. They are used to perform man-in- the-middle attacks
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E. They can physically modify the network gateway
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Which two types of VLANs using PVLANs are valid?___
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What are two limitations of the self-zone policies on a zone-based firewall?___
A. They are unable to block Https traffic
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【多选题】
Which two descriptions of TACACS+ are true? ___
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What are two reasons to recommend SNMPv 3 over SNMPv2?___
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E. SNMPv2 is secure because you can configure authentication and privacy
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Which two actions can a zone- based firewall apply to a packet as it transits a zone pair?___
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Which EAP method authenticates a client against Active Directory without the use of client-side 802.1X certificates?___
A. EAP-TLS
B. EAP-MSCHAPv2
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D.
E. AP-GTC
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What is a limitation of network-based IPS?___
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How does the 802. 1x supplicant communicate with the authentication server?___
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Refer to the exhibit. what is the e ffect of the given configuration?___
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B. It prevents keychain authentication.
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Which command can you enter to configure OSPF to use hashing to authenticate routing updates?___
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Which command can you enter to verify the status of Cisco lOS Resilient Configuration on a Cisco router?___
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A user on your network inadvertently activates a botnet program that was received as an emai attachment. Which type of mechanism does Cisco Firepower use to detect and block only the botnet attack?___
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What does the policy map do in CoPP?___
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【单选题】
How is management traffic isolated on a Cisco ASR 1002?___
A. Traffic isolation is done on the vlan level
B. There is no management traffic isolation on a Cisco ASR 1002
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Which statement about NaT table evaluation in the asa is true?___
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B. Manual NAT policies are applied first
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【单选题】
Which information can you display by executing the show crypto ipsec sa command?___
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D. IPsec SAs established between two peers
【单选题】
How can you prevent NAT rules from sending traffic to incorrect interfaces?___
A. Assign the output interface in the NAT statement
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C. Configure twice NAT instead o bject NAT. 5
D. Use packet-tracer rules to reroute misrouted NAT entries.
【单选题】
What term can be defined as the securing, control, and identification of digital data?___
A. cryptography
B. crypto key
C. cryptoanalysis
D. cryptology
【单选题】
Which feature in the dNS security module provide on and off network DNS protection?___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
D. Layer-4 monitoring
【单选题】
Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
B. Unauthorized switches that are connected to the network can cause spanning-tree loops
C.
D. ouble tagging can cause the switches to experience CAM table overload.
【单选题】
What configuration is required for multitenancy ?___
A. shared infrastructure
B. multiple carriers
C. co-located resources
D. multiple separate zones