简述废物流设计需考虑的问题。
You deploy a mobile messaging solution with Microsoft Exchange Server 2003 Service Pack 2. When the application is running， it must not be able to access protected registry keys. You need to ensure that the application meets the outlined requirement. What are two possible ways to achieve this goal？（） ["Use Microsoft Windows Mobile 5.0 Pocket PC Phone Edition operating system.","Use Microsoft Windows Mobile 2003 for Pocket PC operating system.","Use Microsoft Windows Mobile 5.0 for Smartphone operating system.","Use Microsoft Windows Mobile 2003 for Smartphone operating system."]
线性回归模型的经典假设有（）。 ["参数的线性性","常参数","扰动项均值为零，同方差性","解释变量或自变量之间不相关","扰动项序列无关"]
封堵作业时，管径相同，压力高的管段比压力低的管段所需皮碗的唇部直径要（） ["大","小","相同","小1\/2&Prime"]
You are working on a database that must be functioning 24 hours a day， 7 days a week. The database isconfigured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups（） ["You can perform consistent backups only.","You can perform a complete database backup without shutting down the database instance.","You can back up data files only when all data files have the same SCN recorded in the control file.","You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP command"]
试述生态城市建设的内容与原则。
