题目内容
软件语言是用于书写计算机软件的语言。它主要包括需求定义语言、(45)、(46)、程序设计语言以及(47)等，适用于软件开发的各个阶段。程序设计语言的基本成分是数据成分、运算成分、控制成分以及(48)。程序设计语言有多种分类法，例如，按成分性质分，有顺序语言，并发语言，并行语言，(49)。
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软件的何种性能是指软件只允许被授权用户使用(包括读、写、打印、浏览等)？(64)。
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