基尔霍夫定律包括两个即：节点电流定律和（）
A customer is planning to implement a database server for their high volume online business. Downtime at any point represents a significant loss of revenue， so performance and high availability are extremely important.They requested a 4-way configuration with 8GB RAM and four gigabit Ethernet connections.Which of the following solutions is the most appropriate？（） x445 4-way Xeon DP machine using 16 x 512MB DIMMS， ServeRAID 6M adapter and Ultra320 15K Hard Disk drives in a RAID-1 set with an additional two BroadCom Gigabit NICs。 x366 4-way Xeon MP machine using 16 x 512MB DIMMS， ServeRAID 6M adapter and Ultra320 15K Hard Disk drives in a RAID-1 set with an additional two Intel Gigabit NICs。 x445 4-way Xeon MP machine using 16 x 512MB DIMMS， ServeRAID 6M adapter and Ultra320 15K Hard Disk drives in a RAID-1 set with an additional two BroadCom Gigabit NICs。 x445 4-way Xeon DP machine using 16 x 512MB DIMMS， ServeRAID 6M adapter and Ultra320 15K Hard Disk drives in a RAID-1 set with an additional two Intel Gigabit NIC。
项目管理以（）为核心，建立完善合同管理体系，合同管理从产生、执行、终止全过程始终处于有序和受控状态。 合同。 招标文件。 监理文件。 施工计划。
Which presents the heirarchical relationship between LVM entities？（） Volume Group > Physical Volume > Logical Volume > Filesystem。 Physical Volume > Volume Group > Logical Volume > Filesystem。 Volume Group > Physical Volume > Filesystem > Logical Volume。 Physical Volume > Volume Group > Filesystem > Logical Volume。
液压油常用的粘度包括动力粘度、运动粘度和（） 静止粘度。 相对粘度。 绝对粘度。 标准粘度。
在单相桥式整流电路中，二极管最大反向电压是（）。
