井下低压电网的“三大保护”是（）。 ["过流保护","断流保护","漏电保护","接地保护"]
You have a DNS server named Server1 that runs Windows Server 2003 Service Pack 2 （SP2）. Server1 hosts a primary zone for contoso.com. On Server1， you update the host （A） record for server2.contoso.com to have a new IP address. On Server1， you run Ping server2.contoso.com from a command prompt and the old IP address for Server2 is returned.You need to ensure that the new IP address for Server2 resolves correctly on Server1. What should you do？（） ["Run Nbtstat –R.","Run Ipconfig \/flushdns.","Restart the DNS Server service.","Open the DNS snap-in， right-click on the server and click Clear Cache."]
阿托品过量中毒的解救药是（） ["肾上腺素","颠茄酊","琥珀胆碱","新斯的明"]
在计算机系统内部，汉字的表示方法是采用（）。 ["ASCII码","机内码","国标码","区位码"]
Visual Basic是（）公司推出的几乎是最早的可视化（），从VB首次推出至今已经经历了多个版本，目前广泛使用的是VB 6.0。
行为科学
