【多选题】
Which two networking connection types can be configured on a virtual switch? (Choose two.)___
A. Virtual machine portgroups
B. VMkernel services (such as NFS, iSCSI, or vMotion) to the physical network
C. Web services over the Management Network
D. NFS and FCoE storage services
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相关试题
【多选题】
An administrator creates a DRS cluster of eight ESXi 6.x hosts. There are 10 virtual machines balanced across the hosts. An attempt to place the first host into maintenance mode fails. What are two reasons that the host failed to enter maintenance mode? (Choose two.)___
A. The DRS cluster Automation Level is set to Partially Automated mode.
B. One of the virtual machines on the ESXi Host entering maintenance mode is configured with a DRS Host affinity rule Should run on hosts in group.
C. One of the virtual machines on the ESXi Host entering maintenance mode is configured with a DRS Host affinity rule Must run on hosts in group.
D. One of the virtual machines on the
E. SXi Host entering maintenance mode is configured with an individual Automation Level set to Partially Automated.
【多选题】
When modifying a vApp, which two vSphere entities can be added? (Choose two.)___
A. A resource pool
B. A network pool
C. A vApp
D. A folder
【多选题】
From which two locations in the inventory hierarchy can you deploy a virtual machine using a template? (Choose two.)___
A. Directly from the template.
B. From a compute resource.
C. From an existing virtual machine.
D. From a Datastore.
【多选题】
A company has decided to implement Virtual SAN within their vSphere 6.x environment. The Virtual SAN cluster will be composed of three ESXi 6.x hosts that are on the Virtual SAN Ready Node list. Each ESXi host includes: <Two SAS Controllers that support Passthrough Mode> < Four Solid State Drives (SSDs) 1TB in size each> <20 SAS Magnetic Disks (MDs) 1TB in size each> <The SSDs and MDs are evenly split between the two SAS controllers>. The company will pilot a Virtual SAN cluster utilizing VMware best practices while maximizing storage capacity. The Virtual SAN cluster will use Manual Mode. Which two Disk Group configurations would meet the stated configuration requirements? (Choose two.)___
A. 4 disk groups with 1 SSD and 5 MDs each
B. 2 disk groups with 1 SSD and 7 MDs each
C. 2 disk groups with 2 SSDs and 7 MDs each
D. 2 disk groups with 1 SSD and 10 MDs each
【多选题】
A physical Windows 2008 R2 Server is converted to a virtual machine using VMware vCenter Converter. Upon completion of the conversion and subsequent power on operation, the virtual machine fails to boot and the message below is observed in the Console of the virtual machine: <STOP 0x0000007B INACCESSIBLE_BOOT_DEVICE>. Which two potential issues may be causing this boot failure? (Choose two.)___
A. An incorrect SCSI controller was selected during conversion.
B. Incompatible software drivers were migrated into the virtual machine from the source machine.
C. The vmdk file backing the virtual machine was thick provisioned.
D. A snapshot was taken immediately after the conversion completed.
【多选题】
An administrator is configuring the Failover Order option on a vSphere Distributed Switch. Which two options should be used with IP-hash load balancing? (Choose two.)___
A. Active Uplinks
B. Standby Uplinks
C. Unused Uplinks
D. Override Failover Order
【多选题】
An administrator is configuring the Maximum Transmission Unit value on a vSphere Distributed Switch. Which two options are typical values for ESXi networking? (Choose two.)___
A. 1492
B. 1500
C. 9000
D. 9089
【多选题】
Which two configurable options apply to both virtual machine CPU and memory allocation? (Choose two.)___
A. Reservation
B. Shares
C. Resource Pool
D. Reserve All
【多选题】
When attempting to power on a Virtual Machine you observe the following error: <Cannot open the disk '/vmfs/volumes/volume/vm/vm-000002.vmdk' or one of the snapshot disks it depends on.> Which three actions will be the best solutions to address this problem? (Choose three.)___
A. Verify that the virtual machine's disk files are present.
B. Investigate the host and virtual machine log files.
C. Verify the vmdk descriptor files and if required, recreate them.
D. Delete the disk file preventing the power on operation.
E. Migrate or register the virtual machine to a different host.
【多选题】
An administrator has been tasked with enabling High Availability ___ on a cluster in a vSphere 6.x environment with default settings. The cluster configures properly and there are no errors. The next day when powering on a virtual machine, an error is presented: <Not Enough Failover Resources>. Which three scenarios are likely causes of this error message? (Choose three.)(CDE)
A. The default VM Monitoring Sensitivity is set too high.
B. There are not enough datastore heartbeat datastores configured by default.
C. The default slot size in the cluster is set too high.
D. There are virtual machines with large CPU reservations.
E. A host is in maintenance mode for a replacement of a failed Hard Drive.
【多选题】
vMotion can be performed between which three physical boundaries? (Choose three.)___
A. Between two vCenter Server Systems
B. Between two vSphere Distributed Virtual Switches
C. Between two vCenter Server Datacenter objects
D. Between two VMware NSX Layer 4 segments
E. Between two NFS datastores
【多选题】
An administrator configures vSphere Replication for a virtual machine and enables multiple point in time (PIT) instances under the recovery settings in the Configure Replication wizard. Which two statements are correct for vSphere Replication with multiple point in time instances enabled? (Choose two.)___
A. vSphere Replication retains a number of snapshot instances of the virtual machine on the target site based on the retention policy that you specify.
B. vSphere Replication uses the virtual machine's snapshot instances to define the target site Point in Time instance based on the retention policy that you specify.
C. vSphere Replication does not support virtual machines with snapshots.
D. vSphere Replication supports virtual machines with snapshots.
【多选题】
An administrator is virtualizing a physical application server and adding it to an existing multi-tiered vApp. The application license is currently tied to the physical NIC's MAC address, so the administrator needs to ensure the license will function properly in the virtual machine. Which two actions can the administrator take to satisfy this task? (Choose two.)___
A. Set the MAC address for the vNIC in the guest operating system.
B. Install the physical server's NIC into the ESXi host.
C. Configure the MAC address for the vNIC using the vSphere Web Client.
D. Assign the physical server NIC's MAC address in the vSphere Distributed Switch.
【多选题】
Which two Fibre Channel zoning options are supported with vSphere 6.x? (Choose two.)___
A. Single-Initiator
B. Single-Initiator-Single-Target
C. Multiple-Initiators-Single-Target
D. Multiple-Initiators-Multiple-Targets
【多选题】
An administrator is attempting to remove an ESXi 6.x host from a vSphere Distributed Switch (vDS). When the administrator attempts to remove the host, the following error is observed: <The resource '16' is still in use.> What three steps are needed to successfully remove the host from the switch? (Choose three.)___
A. Select Manage Ports on the vDS for the host.
B. Locate all ports currently in use on the vDS for the host.
C. Migrate or delete any vmkernel or virtual machine adapters associated with the switch.
D. Remove all network cards from the switch before trying to remove the host.
E. Create a standard switch for everything to be automatically be migrated to.
【多选题】
Which two Virtual SAN related actions might start resynchronization of virtual machine objects? (Choose two.)___
A. Editing a virtual machine storage policy to increase the number of replicas.
B. Editing a virtual machine storage policy to reduce the number of replicas.
C. Editing a virtual machine storage policy to increase the number of disk stripes.
D. Editing a virtual machine storage policy to reduce the number of disk stripes.
【多选题】
An administrator is troubleshooting basic network connectivity issues. Which two scenarios are potential issues that this administrator might face? (Choose two.)___
A. The vSwitch is not attached to the correct physical network.
B. The portgroup is not configured to use correct VLAN.
C. Traffic shaping is configured incorrectly.
D. Jumbo frames is configured incorrectly.
【多选题】
Which three items should be validated prior to installing ESXi 6.x? (Choose three.)___
A. Remote Storage has been disconnected.
B. Installation media is available.
C. Server hardware clock is set to UTC.
D. Storage has been partitioned with a VMFS volume.
E. Network cards have been setup to use Jumbo
F. rames.
【多选题】
An administrator is performing an interactive installation of ESXi 6.x. Which three options are available for installation? (Choose three.)___
A. DVD
B. USB
C. PXE
D. Scripted
E. Auto Deploy
【多选题】
After installation of a host in your test environment, you need to move it to production. The only major change that needs to be made is that the hostname of the server needs to change. What are two ways that an administrator can change the host name without editing configuration files on the host directly? (Choose two.)___
A. Login to the Direct Console User Interface and change it from here.
B. Edit the Default TCP/IP Configuration from the vSphere Web Client.
C. Use the Ruby vSphere Client to send a script to the ESXi host that updates the hostname.
D. Update the information in DNS and the
E. SXi host will automatically update with these changes.
【多选题】
An administrator has unsuccessfully attempted several times to install an Operating System inside a virtual machine. The administrator finds that the installation fails at random intervals. Which two actions can be taken to resolve this issue? (Choose two.)___
A. Verify the md5sum and if invalid, download the installation files again.
B. Attempt the installation an additional time.
C. Attempt to use a different installation media or installation method.
D. Create a new virtual machine and attempt the installation with the existing media.
【多选题】
VMware tools is failing to install on a Microsoft Windows virtual machine. What are two possible situations that would prevent the installation? (Choose two.)___
A. The VMware tools installation media is corrupt.
B. The incorrect Operating System was selected in the virtual machine options.
C. The software prerequisites have not been installed.
D. The prerequisite services have not been started.
【多选题】
As part of a multisite Single Sign-On (SSO) deployment what two steps are required to ensure that a change to one Single Sign-On instance is propagated to the other instances? (Choose two.)___
A. Schedule a Replication Task on the primary instance
B. Select the first instance during the installation of subsequent instances
C. During the installation of each instance choose Linked-Mode
D. Enable Synchronize to Active Directory on each instance
【多选题】
You need to add an object to an existing vApp using the vSphere Web Client. How is this accomplished?___
A. Create an Object Inside the vApp.
B. Add an Object to a vApp.
C. Add an Object to the
D. atastore the vApp is located in.
【多选题】
Which three steps must be taken to use vSphere Update Manager 6.x to upgrade an ESXi 5.5 host to vSphere 6.x? (Choose three.)___
A. Download an ESXi Image.
B. Configure the vSphere Update Manager Download Service.
C. Create a baseline and attach it to the ESXi Host.
D. Scan the vCenter Content Library for the
E. SXi Image.
【多选题】
Which two options would allow a database administrator, with no access to the vSphere infrastructure, to connect to a virtual machine? (Choose two.)___
A. Use the Virtual Machine Remote Console (VMRC).
B. Use Remote Desktop Protocol (RDP) to connect.
C. Ask the vSphere administrator to grant permission to access the console through vCenter Server.
D. Ask the vSphere administrator to grant permission to access with the Horizon View Direct Connect Client.
【多选题】
Which three are architecture components of vRealize Operations? (Choose three.)___
A. Identity Server
B. Administrative Server
C. Analytics Server
D. Database Server
E. Connection Broker
【单选题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
A. 手动阀手动阀
B. 撒旦
C. 反对法
D. 第三方
【单选题】
金克拉金克拉撒退热贴开绿灯技术的（）
A. 是否
B. 阿斯顿
C. 撒旦
D. 感到反感
【单选题】
而非热舞法国会开绿灯技术的（）
A. 撒的
B. 热个股分化
C. 返回
D. 而我认为
【单选题】
十大富豪不给发货返回返回返回（）
A. dfdfgd
B. 梵蒂冈梵蒂冈
C. 广泛大概
D. 热
【多选题】
马克思主义哲学所讲的静止是指___
A. 运动的一种特殊形式
B. 绝对不动
C. 排斥运动
D. 事物处于量变状态
E. 事物在特定参考系中未发生位置变动
【多选题】
物质和运动的关系是___
A. 运动是物质的固有属性
B. 物质是运动的承担者
C. 运动是物质的存在方式
D. 运动不一定是物质的运动
E. 物质不一定都在运动
【多选题】
社会的物质性体现在___
A. 劳动是社会产生和存在的决定性因素
B. 在社会中不存在精神的现象和活动
C. 物质资料的产生是社会历史的前提
D. 全部社会生活在本质上是实践的
E. 社会生活中不存在物质关系以外的其他关系
【多选题】
意识的能动作用表现在___
A. 反映客观世界
B. 创造物质世界
C. 通过实践改造客观世界
D. 创造理论体系
E. 为自然界创造秩序
【多选题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
A. 手动阀手动阀
B. 撒旦
C. 反对法
D. 第三方
【多选题】
金克拉金克拉撒退热贴开绿灯技术的（）
A. 是否
B. 阿斯顿
C. 撒旦
D. 感到反感
【多选题】
而非热舞法国会开绿灯技术的（）
A. 撒的
B. 热个股分化
C. 返回
D. 而我认为
【多选题】
十大富豪不给发货返回返回返回（）
A. dfdfgd
B. 梵蒂冈梵蒂冈
C. 广泛大概
D. 热
【判断题】
金克拉金克拉撒旦蒂萨里大儿童家爱丽丝打开就撒开绿灯技术的（）
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【单选题】
(32962)发电车的充电柜输入的AC380三相交流电经三相桥式整流之后，给48V蓄电池充电时，其输出的直流电电压范围在( )V。(1.0分)___
A. 50～56
B. 55～58
C. 58～60
D. 56～60
【单选题】
(32963)康明斯发电车启动电源柜内三台启动电机主回路中的保险容量是( )A。(1.0分)___
A. 200
B. 300
C. 400
D. 500
【单选题】
(32964)发电车24V蓄电池与48V蓄电池的用法，正确的说法是( )。(1.0分)___
A. 24V蓄电池既用作启机用，又用作照明用
B. 48V蓄电池在应急情况下，可通过改变接线方式用作启机
C. 当24V蓄电池电量亏损时，可用48V蓄电池给24V蓄电池充电
D. 当24V与48V电池都出现亏损时，可将两组蓄电池串起来启动柴油机组
【单选题】
(32965)发电车的辅助供油装置中，燃油流动路线方向正确的是( )。(1.0分)___
A. 下油箱→燃油泵→燃油粗滤器→上油箱→磁性滤清器→机组→下油箱
B. 下油箱→燃油粗滤器→燃油泵→上油箱→磁性滤清器→机组→下油箱
C. 下油箱→燃油粗滤器→燃油泵→磁性滤清器→上油箱→机组→下油箱
D. 下油箱→燃油粗滤器→燃油泵→上油箱→机组→磁性滤清器→下油箱
【单选题】
(32966)发电车下油箱里隔板的作用，其说法正确的是( )。(1.0分)___
A. 防止燃油发生爆炸
B. 防止燃油因冬季低温时结蜡
C. 防止油箱发生泄漏
D. 加强油箱强度并缓冲列车运行时，燃油因惯性对油箱的冲动
【单选题】
(32967)发电车辅助供油装置中，有关油阀的“开”和“关”的位置，正确的说法是( )。(1.0分)___
A. 应急情况下，使用手摇泵泵油时，与交流燃油泵直接相连的油阀均需打开
B. 机组停机后需关闭该机与上油箱连通的油阀
C. 上油箱放油阀在运行中必须打开
D. 下油箱的连通管油阀在正常情况下，必须关闭
【单选题】
(32968)发电车的燃油粗滤器和磁性滤清器，在( )级保养时必须拆开清洗。(1.0分)___
【单选题】
(32969)发电车装在侧墙上的旋风式过滤器，对其作用不正确的说法是( )。(1.0分)___
A. 进气通道的首端
B. 过滤进气中的大颗粒杂质
C. 过滤进气中的水滴
D. 增加进气中的含氧量
【单选题】
(32970)对发电车的柴油机排烟口的防雨帽，要经常检查，一旦出现( )情况时，要立即检修。(1.0分)___
A. 打开时能自动落下
B. 打开时不能自动落下
C. 转动很灵活
D. 密封严实
【单选题】
(32971)发电车的柴油机进气装置中，空气流动方向正确的是( )。(1.0分)___
A. 进气风道→旋风式过滤器→空气滤清器→增压器→中间冷却器
B. 旋风式过滤器→进气风道→增压器→空气滤清器→中间冷却器
C. 旋风式过滤器→进气风道→空气滤清器→中间冷却器→增压器
D. 旋风式过滤器→进气风道→空气滤清器→增压器→中间冷却器
【单选题】
(32972)发电车的备用机油箱的容量是( )L。(1.0分)___
A. 80
B. 90
C. 100
D. 110
【单选题】
(32973)发电车机油供装置中，通常装有( )。(1.0分)___
A. 一台机油泵
B. 二台机油泵
C. 一台手摇机油泵
D. 没有机油泵，用人工领来机油倒入机油箱中
【单选题】
(32974)发电车的机油供给装置的作用是( )。(1.0分)___
A. 贮存机油备用
B. 贮存废机油
C. 为了“B”级保养时排机油方便
D. 为了在“B”级保养中，自动换机油
【单选题】
(32975)发电车机房内，烟火报警传感器不能探测到的火灾隐患因素的是( )。(1.0分)___
A. 烟雾
B. 高温
C. 火焰
D. 适量一氧化碳
【单选题】
(32976)发电车的烟火报警器具有下列正确的功能的是( )。(1.0分)___
A. 能检测到烟雾、高温、火焰气体
B. 报警时，有时间记忆
C. 可以进行手动报警
D. 一旦有少量火灾隐患时，可自动喷撒灭火剂
【单选题】
(32977)发电车的烟火报警器正常工作时的电源供给，正确的是( )。(1.0分)___
A. 烟火报警器主机自带电源
B. 发电车提供的交流380V电源
C. 发电车提供的交流220V，或直流48V电源
D. 发电车提供的直流24V电源
【单选题】
(32978)发电车烟火报警器下列正确的工作原理图是( )。(1.0分)___
A. 火患源→烟火报警器探头→输入回路→声光报警器→输出回路→消防联动灭火设备或报警、记录广播单元
B. 烟火报警器探头→火患源→输入回路→声光报警器→输出回路→消防联动灭火设备或报警、记录广播单元
C. 火患源→烟火报警器探头→声光报警器→输入回路→输出回路→消防联动灭火设备或报警、记录广播单元
D. 火患源→烟火报警器探头→声光报警器→输入回路→输出回路→消防联动灭火设备或报警、记录广播单元
【单选题】
(32979)TCDS不能监控的下列因素的是( )。(1.0分)___
A. 空调故障
B. 基础制动系统故障
C. 发电车燃油不足
D. 客车事故
【单选题】
(32980)TCDS实现远程监控报警时，下列( )不是必备的环节。(1.0分)___
A. 无线通讯装置
B. 地面数据管理专家
C. 车辆乘务员
D. 局域网
【单选题】
(32981)TCDS对主要行车故障进行实时监控时，下列( )不是其中的功能之一。(1.0分)___
A. 实时监测诊断
B. 记录和存储
C. 集中显示和报警
D. 进行故障消除
【单选题】
(32982)TCDS实时监控数据不包括的是( )。(1.0分)___
A. 客车状态数据
B. 故障特征参数
C. 分析数据
D. 发电车柴油机运行数据
【单选题】
(32983)TCDS的主要功能中，不能通过GPRS发送的是( )。(1.0分)___
A. 车辆故障和报警事件
B. 报警和故障的定时通报
C. 列车的GPS定位信息
D. 车辆乘务员当班饮酒
【单选题】
(32984)TCDS实时数据传输流程正确的是( )。(1.0分)___
A. GPRS实时数据→移动公网→铁路局网络安全传输平台→铁路局5T双机服务器→车辆段双机服务器
B. GPRS实时数据→铁路局网络安全传输平台→移动公网→铁路局5T双机服务器→车辆段双机服务器
C. GPRS实时数据→铁路局网络安全传输平台→铁路局5T双机服务器→移动公网→车辆段双机服务器
D. GPRS实时数据→移动公网→车辆段双机服务器→铁路局网络安全传输平台→铁路局5T双机服务器
【单选题】
(32985)在接触器的电磁机构中，下列( )不是其组件之一。(1.0分)___
A. 电磁线圈
B. 铁芯
C. 衔铁
D. 触头
【单选题】
(32986)在接触器的组成中，下列( )不全是其组成结构。(1.0分)___
A. 电磁机构、脱扣器、灭弧装置、辅助触头、外壳、支架
B. 电磁机构、触头、灭弧装置、辅助触头、外壳、支架
C. 电磁机构、触头、灭弧装置、复位螺钉、外壳、支架
D. 电磁机构、触头、报警装置、辅助触头、外壳、支架
【单选题】
(32987)自动空气断路器中，下列( )不是其组件之一。(1.0分)___
A. 触点系统
B. 电磁线圈
C. 灭弧系统
D. 脱扣机构
【单选题】
(32988)继电器进行工作时，下列( )不是其必须完成的工作程序。(1.0分)___
A. 感测机构把感测的电气量或非电气量传递给中间机构
B. 感测量与整定值比较
C. 发出报警信号
D. 感测量达到整定值时，中间机构执行接通或断开的动作
【单选题】
(32989)有关继电器结构和功能，其不正确的说法是( )。(1.0分)___
A. 继电器的感测机构能对许多种电气量或非电气量进行感测，因而其应用范围很宽
B. 继电器的感测机构可以感测许多种非电气量，但执行的动作可以是接通或断开电路
C. 继电器的感测机构感测电气量因素时，执行的动作不会是接通或断开电路
D. 继电器的感测机构感测电气量或非电气量变化时，必须进行比较后达到整定值时，中间机构才执行动作
【单选题】
(32990)在继电器的作用中，下列( )不是其作用之一。(1.0分)___
A. 扩大控制范围
B. 放大
C. 直接接通或断开三相电路
D. 综合信号
【单选题】
(32991)电测量指示仪表执行测量任务时，下列( )不是其中的功能之一。(1.0分)___
A. 测量线路把被测量转换成测量机构可以接受的过渡量
B. 过渡量与给定值进行比较
C. 测量机构把过渡量转换为指针的角度位移
D. 指针指向相应的数值刻度
【单选题】
(32992)发电车康明斯柴油机配电盘上转速调整按钮可调额定转速( )转。(1.0分)___
A. ±200
B. ±150
C. ±100
D. ±50
【单选题】
(32993)发电车康明斯柴油机当冷却水温超过( )℃时，柴油机就会出现报警停车。(1.0分)___
A. 96
B. 100
C. 106
D. 116
【单选题】
(32994)发电车康明斯柴油机，下列( )不属其保护范围。(1.0分)___
【单选题】
(32995)发电车康明斯柴油机启机升速后，电磁阀的供电过程正确的是( )。(1.0分)___
A. 运行开关CD→高水温保护继电器→超速板→低油压保护继电器→停车电磁阀
B. 运行开关CD→超速板→高水温保护继电器→低油压保护继电器→停车电磁阀
C. 运行开关CD→高水温保护继电器→低油压保护继电器→超速板→停车电磁阀
D. 运行开关CD→低油压保护继电器→超速板→高水温保护继电器→停车电磁阀
【单选题】
(32996)发电车康明斯柴油机启机正确的操作过程是( )。(1.0分)___
A. 合上电源开关→试报警→开电锁钥匙→将“运行”开关推至A-B，C-D均接通位→接通启机开关
B. 合上电源开关→试报警→开电锁钥匙→接通启机开关→将“运行”开关推至A-B，C-D均接通位
C. 试报警→合上电源开关→开电锁钥匙→将“运行”开关推至A-B，C-D均接通位→接通启机开关
D. 合上电源开关→开电锁钥匙→将“运行”开关推至A-B，C-D均接通位→试报警→接通启机开关
【单选题】
(32997)发电车启动柴油机过程中，正确的操作是( )。(1.0分)___
A. 当柴油机启动困难时，可通过多次启机试验，查找故障根源
B. 柴油机启机正常后，启动锁钥匙保持在接通位
C. 启机之前，进行试报警
D. 启机时，保持“点火开关”接通3到5分钟时间
【单选题】
(32998)发电车报警保护电路中，属于一个报警电路的是( )。(1.0分)___
A. 过流预报警、过流脱扣报警、逆功率脱扣报警、绕组高温报警、低油位报警
B. 超速报警、过流脱扣报警、逆功率脱扣报警、绕组高温报警、高水温报警
C. 过流预报警、过流脱扣报警、逆功率脱扣报警、绕组高温报警、高水温报警
D. 过流预报警、过流脱扣报警、逆功率脱扣报警、烟雾报警、高水温报警
【单选题】
(32999)发电车出乘前日常保养中，对蓄电池的标准要求不正确的是( )。(1.0分)___
A. 表面清洁，无硫化、漏液
B. 配线无老化、龟裂
C. 接线端子无氧化、锈蚀、腐蚀
D. 电解液面高出隔板10～20mm
【单选题】
(33000)发电车柴油机进气道中的空气阻尼指示器显红色时，说明( )。(1.0分)___
A. 气缸进气阻力小
B. 气缸进气阻力大
C. 气缸进气中有水分
D. 气缸进气干净、充分
【单选题】
(33001)柴油机更换燃油滤清器，正确的做法是( )。(1.0分)___
A. 松开旧滤清器时，应面向滤清器口逆时针用力拧
B. 更换滤清器过程中，需打开上油箱至该机油阀
C. 将旧滤清器的密封垫取出，重复利用
D. 更换滤清器后，需将油管、滤清器内空气排干净
