在对回收后的调查问卷进行数据处理时，处理缺失值的办法主要是（）。 用一个样本统计量的值代替缺失值。 用从一个统计模型计算出来的值去代替缺失值。 将有缺失值的个案删除。 将有缺失值的个案保留，仅在相应的分析中做必要的删除。
工程质量（）或没有完成维护工作的不得交办。 不合格。 补齐顶梁后方的支护。 没有完成维护工作。 先支后回的原则。
You work as a network administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com.All servers on the ABC.com network have Windows Server 2012 R2 installed. The ABC.com network contains an iSCSI storage area network （SAN） as well as a server named ABC_SR02 that runs the Hyper-V server role. ABC_SR02 hosts several virtual machines.You are required to create a LUN on the SAN that will only be used by a virtual machine named ABC_VT01.How would you ensure that the other virtual machines cannot use the LUN？（） You should create a Differencing Virtual Hard Disk on ABC_VT01.。 You should configure Router Guard on ABC_SR02.。 You should make use of the VHDX disk format on ABC_VT01.。 You should create a pass-through disk on ABC_VT01.。
参照资产重置成本为5000元，生产能力为3000件/年；被评估资产生产能力为6000件/年，设规模经济效益指数为0.7，求被评估资产的重置成本。
The following command output was gathered from Router R1, an ABR between areas 0 (backbone) and area 1. In this internetwork, area 0 contains all the subnets of cla ss A network 10.0.0.0. R1's OSPF process has a distribute - list prefix question in command configured. Assuming the subnets listed in the answers actually exist in area 0. Which of the following occurs on router R1?（） R1#sh ip prefix - list ip prefix - list question: 4 entries seq 5 deny 10.1.2.0/24 ge 25 le 27 seq 15 deny 10.2.0.0/16 ge 30 le 30 seq 20 permit 0.0.0.0/0 le 32 R1 will not create/flood a type 3 LSA for subnet 10.1.2.0/26 into area 1。 R1 will not create/flood a Type 3 LSA for subnet 1 0.1.2.0/24 into area 1。 R1 will not have an OSPF route for subnet 10.1.2.0/26 in its IP routing tablE。 R1 will not have an OSPF route for subnet 10.1.2.0/24 in its IP routing tablE。
建筑工程单位（子单位）工程质量验收合格的规定有（）
