单选题
Microsoft's COM is a software{{U}} {{U}}
31 {{/U}} {{/U}}that allows applications to be built from binary
software components. COM is the underlying architecture that forms the
foundation for higher-level software services, like those provided by OLE. COM
defines a binary standard for function calling between components, a way for
components to dynamically discover the interfaces implemented by other
components, and a mechanism to identify components and their interfaces
uniquely. OLE is a compound{{U}} {{U}} 32
{{/U}} {{/U}}standard developed by Microsoft. OLE makes it possible to
create{{U}} {{U}} 33 {{/U}} {{/U}}with one application and link
or embed them in a second application. Embedded objects retain their original
format and{{U}} {{U}} 34 {{/U}} {{/U}}to the application that
created them. Support for OLE is built into the Windows and MacOS Operating
Systems. A{{U}} {{U}} 35 {{/U}} {{/U}}compound document standard
developed mainly by Apple and IBM is called OpenDoc.