[问答题] 简述气环的作用

假设你正准备全新安装SQL SERVER 2005服务器。你需要去选择服务器允许的通讯协议，以便客户端计算机可以使用这些协议连接到该服务器。请问，下面哪两个协议可以达到这个目的？（） ["Named Pipes（命名管道）","TCP\/IP","Shared Memory（共享内存）","Virtual Interface Adapter（VIA）（虚拟接口适配器（VIA）协议）","Multiprotocol"] 小区种植鉴定从作用上来说可分为前控和后控两种类型，其中，国外常利用小区种植鉴定的前控作用，而我国常利用它的后控作用，请你谈谈关于这句话的认识。 You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously. Dim ar As IAsyncResult = cmd.BeginExecuteReader() You need to execute a method named DoWork() that takes one second to run while the SQL query is executing. DoWork() must run as many times as possible while the SQL query is executing. Which code segment should you use?（） ["","","",""] 数字高程模型 一种为适应大规模定制生产而采用的策略，通过这种策略使企业能够实现产品多样化，适应顾客的需求，这是指（） ["协同战略","外包战略","延迟化战略","精益战略"] 简述气环的作用