液压单向阀是一种允许油液（）的单向阀。 双向。 单向。 正向。 反向。
During a planning session，it is determined that both nodes in a mutual takeover cluster will provide NFS mounts to a variety of Unix hosts. What is the first consideration that must b4e taken into account when using NFS with HACMP？（） AIX Connections will need to be installed to provide the NFS shares.。 Mutual takeover cluster cannot provide NFS services from both nodes.。 The major number for the volume groups needs to be the same on both nodes.。 The no option rfc 1323 must be set to 1 and the number of biods need to be adjusted to provide reasonable response times.。
食品法典委员会（CAC）将风险分析引入食品安全性评价中，并将风险分析分为（）三个部分。 风险性评价。 风险控制。 风险信息交流。 风险鉴定。
某水电站工程，经批准的施工进度计划网络图如下图所示
施工中发生了以下事件：
事件1：A工作因设计变更停工10d；
事件2：B工作因施工质量问题返工，延长工期7d；
事件3：E工作因建设单位供料延期，推迟3d施工；
事件4：在设备管道安装气焊作业时，火星溅落到正在施工的地下室设备用房聚氨酯防水涂膜层上，引起火灾。
在施工进展到第120天后，施工项目部对第110天前的部分工作进行了统计检查。
统计数据见下表：
本工程计划总工期和实际总工期各为多少天？
Companycom tells the technical sales specialist that recent announcements state that virtual lan in the datacenter is the best option. The customer wants to use interpartition communication to save on adapters and increase performance. The systems are going to have shared and dedicated processor partitions. Some of the partitions will be running AIX 5.2 and some will be running AIX 5.3. The second p5 590 will be running a mixture of AIX 5.3 and Linux partitions with 2.6 kernel. What limitations of vlan/interpartition communication should be discussed with this customer?（） Virtual Ethernet uses the system processors for all communication functions instead of offloading that load to processors on network adapter cards. Virtual Ethernet is supported on AIX 5L and Linux 2.5 and above. 。 Virtual Ethernet can be used within groups of shared OR groups of dedicated processor partitions, but not both simultaneously. Virtual Ethernet comes with AIX 5L, and is supported in AIX 5.2 or AIX 5.3 partitions, but not Linux. 。 Virtual Ethernet can be used in both shared and dedicated processor partitions. Virtual Ethernet can run in an AIX 5.3 or Linux 2.6 Kernel, but not AIX 5.2 partitions. Virtual Ethernet can only connect partitions within a single system. 。 Virtual Ethernet uses the system processors for all communication functions instead of offloading that load to processors on network adapter cards. Virtual Ethernet can connect partitions between systems if the HMC is shared between systems.。
纤溶酶含量减少可见于（）
