公司形式变更
从资本提供者角度，固定资本投资决策中用于折现的资本成本其实就是投资者的机会成本。
热煤气站至最远用户之间热煤气管道的长度，应根据煤气在管道内的温度降和压力降确定，但不宜超过（）m。 50。 80。 100。
You need to design a solution so that users in the retail outlets can access their e-mail on the Exchange 2003 servers. What should you do？（） Install an Exchange 2003 server infrastructure that will support POP3 connections from the Internet. Install a user certificate on each client computer at the retail outlets. Instruct the users to sign and encrypt all outbound e-mail messages。 Install an Exchange 2003 server infrastructure that will support encrypted POP3 connections from the Internet. Configure the client computer in the retail outlets to use an encrypted connection to the POP3 server。 Install an Exchange 2003 server infrastructure that will support encrypted Microsoft Outlook Web Access connections from the Internet. Instruct all users at the retail outlets to access their e-mail by using Microsoft Internet Explorer 5.5 or later to connect to the secure Microsoft Outlook Web Access server。 Install an Exchange 2003 server infrastructure that will support encrypted IMAP4 connections from the Internet. Configure the client computers in the retail outlets to use an encrypted connection to the IMAP4 server。
什么是生成性学习策略？
您将创建一个使用的非托管的资源的类。
此类维护对其他对象的托管资源的引用。
您需要确保这类的用户可以显式释放资源，当不再需要的类实例。
您应执行哪三种操作？（）
