【判断题】
(32025)柴油机的进、排气门可以调换安装使用。(1.0分)
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相关试题
【判断题】
(32026)柴油机的排气可分为自由排气和强迫排气两个过程。(1.0分)
【判断题】
(32027)柴油机的柱塞式喷油泵可以采用齿条式油量调节机构进行油量调节。(1.0分)
【判断题】
(32028)柴油机的转速越高，进气提前角应越大。(1.0分)
【判断题】
(32029)涡流室式燃烧室部分在气缸盖内，直接与冷却水接触，散热损失大，冷车启动较困难，燃油消耗率较高。(1.0分)
【判断题】
(32030)曲柄连杆机构将机械能转换成化学能。(1.0分)
【判断题】
(32031)柴油机活塞环装入气缸后，开口处不应留有间隙，以防止漏气。(1.0分)
【判断题】
(32032)柴油机冷却水中添加DCA的主要目的是提高冷却水的冰点。(1.0分)
【判断题】
(32033)柴油机连杆在非做功行程中，将曲轴的旋转力传给活塞。(1.0分)
【判断题】
(32034)柴油机气缸盖螺栓紧固应由中央向四周均匀交替地按规定的扭矩分步逐次进行。(1.0分)
【判断题】
(32035)柴油机曲轴轴向间隙越小越好。(1.0分)
【判断题】
(32036)柴油机在实际工作过程中，进气门上止点打开，下止点关闭。(1.0分)
【判断题】
(32037)柴油机正常使用时，润滑系统中的机油是不损耗的。(1.0分)
【判断题】
(32038)柴油机中，压缩比是指气缸总容积与燃烧室容积之比。(1.0分)
【判断题】
(32039)四冲程多缸柴油机，曲轴每转二圈所有气缸都完成一次作功过程。(1.0分)
【判断题】
(32040)柴油机工作时，活塞顶面、气缸盖底面的温度分布是均匀的。(1.0分)
【判断题】
(32041)统一式燃烧室一般配用多孔喷油器，将燃料直接喷射到燃烧室中，借助喷出油束的形状与燃烧室的形状相吻合，以及燃烧室内的空气涡流运动，迅速形成混合气。(1.0分)
【判断题】
(32042)柴油机型号KTA-l9G2中K表示康明斯柴油机。(1.0分)
【判断题】
(32043)柴油机型号KTA-l9G2中A表示空气中间冷却。(1.0分)
【判断题】
(32044)发电车烟火报警器必须100%作用良好、100%开机，报警音量不低于50db.(1.0分)
【判断题】
(32045)为了保证发电车运行安全，本务列车列车长、乘警长和客运人员不管什么情况下也不得进入发电车。(1.0分)
【判断题】
(32046)用万用表测量电阻值为10～20Ω电阻时，应选用R×l0 挡测量。(1.0分)
【判断题】
(32047)千分尺的制造精度，分为0级和1级两种，0级精度最高。(1.0分)
【判断题】
(32048)量具分为万能量具、标准量具、专用量具。(1.0分)
【判断题】
(32049)凸轮机构能使从动杆按照凸轮轮廓曲线，实现各种复杂的运动。(1.0分)
【判断题】
(32050)机构具有确定运动的条件是原动件数等于机构的自由度数。(1.0分)
【判断题】
(32051)齿轮在轴上固定当要求配合过盈量很大时，应采用液压套合法装配。(1.0分)
【判断题】
(32052)齿轮在轴上固定当要求配合过盈量很大时，应采用液压套合法装配。(1.0分)
【判断题】
(32053)孔的尺寸总是小于轴的尺寸，称为过渡配合(1.0分)
【判断题】
(32054)在带传中，不产生打滑的皮带是平带(1.0分)
【判断题】
(32055)液压系统一般由动力部分、执行部分、控制部分和辅助装置组成。(1.0分)
【判断题】
(32056)曲轴可以将旋转运动变为往复直线运动。(1.0分)
【判断题】
(32057)轴承载荷较大时应选用粘度较高的润滑油。(1.0分)
【判断题】
(32058)深沟球轴承是应用范围最广的一类轴承。(1.0分)
【判断题】
(32059)联轴器主要分为刚性联轴器和弹性联轴器两大类。(1.0分)
【判断题】
(32060)联轴器的主要作用是将两根轴联结在一起，使它们一起旋转，目的是传递扭矩和热量。(1.0分)
【判断题】
(32061)根据图样或实物的尺寸，在毛坯或工件上，用划线工具划出加工轮廓线和点的操作叫划线。(1.0分)
【判断题】
(32062)划线基准应与设计基准一致，但，划线时不一定从基准线开始。(1.0分)
【判断题】
(32063)进行锉削前，应将工件装夹在台虎钳钳口的中间，加工的工件面应与钳口持平。(1.0分)
【判断题】
(32064)錾削主要对难以机械加工的场合进行，錾削的主要工具是錾子和手锯。(1.0分)
【判断题】
(32065)钻孔时，先使钻头对准钻孔中心起钻出一浅坑，观察钻孔位置是否正确。(1.0分)
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【多选题】
When using the Adaptive Security Device Manager（ASDM), which two options are available to add a new root certificate？___
A. Install from SFTP server
B. Usehttps
C. Install from a file
D. Use LDAP
E. Use SCEP
【多选题】
Which two SNMPv3 services support its capabilities as a secure networ k manage protocol？ ___
A. access control
B. the shared secret key
C. authentication
D. authorization
E. accounting
【多选题】
Which two statements about routed firewall mode are true ？___
A. The firewall acts as a routed hop in the network
B. This mode conceals the presence of the firewall
C. The firewall requires a unique iP address for each interface
D. This mode allows the firewall to be added to an existing networ k with minimal additional configuration By default， this mode permits most traffic to pass throug
【多选题】
Which two statements describe DHCP spoofing attacks？___
A. They are used to perform man-in- the-middle attacks
B. They can access most network devices
C. They can modify the flow of traffic in transit. LNGKAIG
D. They protect the identity of ti attacker by masking the DHCP address
E. They can physically modify the network gateway
【多选题】
Which two types of VLANs using PVLANs are valid？___
A. isolated
B. promiscuous
C. backup
D. secondary
E. community
【多选题】
What are two limitations of the self-zone policies on a zone-based firewall？___
A. They are unable to block Https traffic
B. They restrict SNMP traffic.
C. They are unable to support Https traffic
D. They are unable to implement application inspection
E. They are unable to perform rate limiting
【多选题】
Which two descriptions of TACACS+ are true？ ___
A. The TACACS+ header is unencrypted
B. It combines a uthentication and authorization
C. It uses TCP as its transport protocol
D. Only the password is encrypted.
E. It uses UDP as its transport protocol.
【多选题】
Which two actions does an IPS perform？ ___
A. it spans the traffic
B. it reflects the traffic back to the sender
C. it encrypts the traffic
D. it terminates the user session or connection of the attacker
E. it reconfigures a device to block the traffic
【多选题】
In which form of fraud does an attacker try to learn information such as login credenti account information by ma squerading as a reputable entity or person in email， IM or communication channels ?___
A. phishing
B. Smurfit
C. Hacking
D. Identity Spoofing
【多选题】
Which two ESA services are available for incoming and outgoing mails ？___
A. anti-DoS
B. reputation filter
C. antispam
D. content filter
E. DLP
【多选题】
What are two reasons to recommend SNMPv 3 over SNMPv2？___
A. SNMPv3 is secure because you can configure authe ntication and privacy
B. SNMPv3 is insecure because it send in formation in clear text
C. SNMPv2 is insecure because it send information in clear text
D. SNMPv3 is a Cisco proprietary protocol
E. SNMPv2 is secure because you can configure authentication and privacy
【多选题】
Which two actions can a zone- based firewall apply to a packet as it transits a zone pair？___
A. drop
B. inspect
C. queue
D. quarantine
【单选题】
Which security principle has been violated if data is altered in an unauthorized manner？___
A. accountability
B. confidentiality
C. availability
D. integrity
【单选题】
Which IKE Phase 1 parameter can you use to require the site-to-site VPN to use a pre-shared ？___
A. encryption
B. authentication
C. group
【单选题】
Which command successfully creates an administrative user with a password of "cisco"on a Cisco router?___
A. username Operator privilege 7 password cisco
B. username Operator privilege 1 password cisco
C. username Operator privilege 15 password cisco
D. username Operator password cisco privilege 15
【单选题】
Which EAP method authenticates a client against Active Directory without the use of client-side 802.1X certificates？___
A. EAP-TLS
B. EAP-MSCHAPv2
C. EAP-PEAP
D.
E. AP-GTC
【单选题】
What is a limitation of network-based IPS？___
A. It must be in dividually configured to support every operating system on the network.
B. It is most effective at the in dividual host level
C. It is unable to monitor attacks across the entire netw ork
D. Large installations require numerous sensors to fully protect the network
【单选题】
When would you configure the ip dhcp snooping trust command on a sw itch？___
A. when the switch is connected to a DHCP server
B. when the switch is working in an edge capacit
C. when the switch is connected to a client system
D. when the switch is serving as an aggregator
【单选题】
How does the 802. 1x supplicant communicate with the authentication server？___
A. The supplicant creates EAP packets and sends them to the authenticator, which encapsulates them into RADIUS and forwards them to the authentication server.
B. The supplicant creates RADIUS packets and sends them to the authe nticator, which encapsulates the m into EAP and forwards them to the a uthentication server.
C. The supplicant creates RADIUS packets and sends them to the authenticator, which translates them into eap and forwards them to the a ut hentication server
D. The supplicant creates
E. AP packets and sends them to the authe nticator, which translates them into radius and forwards them to the authentication server.
【单选题】
Which command do you enter to verify the phase I status of a VPN connection？___
A. sh crypto se ssion
B. debug crypto isakmp
C. sh crypto isakmp sa
D. sh crypto ipsec sa
【单选题】
Refer to the exhibit. what is the e ffect of the given configuration？___
A. It enables authentication，
B. It prevents keychain authentication.
C. The two routers receive normal updates from one another.
D. The two device s are able to pass the message digest to one another.
【单选题】
Which command can you enter to configure OSPF to use hashing to authenticate routing updates？___
A. ip ospf aut hentication message-digest
B. neighbor 192 168.0 112 cost md5
C. ip ospf priority 1
D. ip ospf aut hentication-key
【单选题】
Which command can you enter to verify the status of Cisco lOS Resilient Configuration on a Cisco router?___
A. show secure bootset
B. secure boot-image
C. show binary file
D. ure boot-config
【单选题】
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？___
A. network-based access control rule
B. reputation-based
C. user-ba sed access control rule
D. botnet traffic filter
【单选题】
What does the policy map do in CoPP？___
A. defines service parameters
B. defines packet selection parameters
C. defines the packet filter
D. define s the action to be performed
【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
C. Traffic is isolated based upon how you configure routing on the device
D. The management interface is configured in a special vRF that provides traffic isolation from the default routing table
【单选题】
Which statement about NaT table evaluation in the asa is true？___
A. After-auto NAT polices are appl d first
B. Manual NAT policies are applied first
C. the asa uses the most specific match
D. Auto NAT policies are applied first
【单选题】
Which information can you display by executing the show crypto ipsec sa command？___
A. ISAKMP SAs that are established between two peers
B. recent changes to the IP address of a peer router
C. proxy infor mation for the connection between two peers
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
B. Add the no-proxy-arp command to the nat line.
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
【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
