Microsoft’s COM is a software(146)that allows applications to be built from binary software components. COM is the underlying ar

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问题 Microsoft’s COM is a software(146)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(147)standard developed by Microsoft. OLE makes it possible to create(148)with one application and link or embed them in a second application. Embedded objects retain their original format and(149)to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A(150)compound document standard developed mainly by Apple and IBM is called OpenDoc.  

选项 A、completing
B、competing
C、connecting
D、contained

答案B

解析 微软提出的COM是一种软件体系结构,它可以根据二进制软件构件构成应用软件。就像OLE提供的服务一样,COM是组成高层次软件服务的一种基本的体系结构。COM定义了构件之间进行功能调用的二进制标准,这是使得一个构件能够动态地发现其他构件实现的接口的一种方法,也是标识构件及其接口的特殊机制。OLE是由微软开发的复合文档标准。OLE可以生成与一种应用有关的对象,并且把它链接或嵌入到另外一个应用中。被嵌入的对象保持了原来的格式,而且可以与生成它们的应用链接起来。Windows 和MacOS操作系统已经内置了对OLE的支持。主要由Apple 和IBM 开发的竞争性复合文档标准叫做 OpenDoc。
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