您应该选择一个类，是从小的和大的集合中恢复关键项的最好的。您应该选择哪一个类？（） ["OrderedDictionary class 表示根据键\/索引排序的键\/值对的集合","HybridDictionary class","ListDictionary class 小集合","Hashtable class 存储大集合时效率最高"]
16PF
Your company has 10 servers that run windows server 2008. The servers have RDP enabled for server administration. RDP is configured to use default security settings. All administrators computers run widows vista. You need to ensure the RDP connections are as secure as possible. Which two actions should you perform? （） ["Set the security layer for each server to the RDP security layer.","Configure the firewall on each server to block port 3389.","Acquire user certificates from the internal certificate authority.","Configure each server to allow connections only to remote desktop client computers that use network level authentication."]
酶基因克隆的主要操作步骤包括（） ["目的酶基因的获取","构建重组表达载体","重组载体导入受体细胞","加入诱导剂使目的酶表达","对重组子进行筛选与鉴定"]
WTO与GATT之间的区别（） ["WTO是永久性的正式的国际组织，具有法律人格","WTO调整的经贸关系领域远宽于GATT","WTO是统一的多边贸易管理机构要求一揽子接受","WTO具有健全的机构体系和更广泛的代表性"]
进行穿斗式和抬梁式木构架优缺点的比较。
