在 Visual FoxPro 中，以下关于删除记录的描述，正确的是______。

A．SQL 的 DELETE 命令在删除数据库表中的记录之前，不需要用 USE 命令打开表

B．SQL 的 DELETE 命令和传统 Visual FoxPro 的 DELETE 命令在删除数据库表中的 记录之前，都需要用 USE 命令打开表

C．SQL 的 DELETE 命令可以物理地删除数据库表中的记录，而传统 Visual FoxPro 的DELETE 命令只能逻辑删除数据库表中的记录

D．传统 Visual FoxPro 的 DELETE 命令在删除数据库表中的记录之前不需要用 USE命令打开表

A management domain typically contains a large amount of management information. Each individual item of（）information is an instance of a managed object type. The definition of a related set of managed（）types is contained in a Management Information Base (MIB) module. Many such MIB modules are defineD. For each managed object type it describes, a MIB（）defines not only the semantics and syntax of that managed object type, but also the method of identifying an individual instance so that multiple（）of the same managed object type can be distinguisheD. Typically, there are many instances of each managed object（）within a management domain.

The definition of a related set of managed（）types is contained in a Management Information Base (MIB) module.

A．path

B．object

C．route

D．packet