【单选题】【消耗次数：1】
系统设计阶段的主要任务是根据系统的逻辑模型建立物理模型，以便说明（）。
①
系统开发的可行性
②
系统是什么
③
系统怎么干
④
系统如何实施
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【简答题】
系统分析阶段得到的新系统逻辑模型，解决的是新系统“做什么”的问题；而系统设计阶段得到的新系统[填空1]模型，回答的是“如何做”的问题。
随机题目
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came to
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kept to
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took to
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went to
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as a result of
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in addition to
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with regard to
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on behalf of
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Better than
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Other than
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More than
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Rather than
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what
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how
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however
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whatever
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damage
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help
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wrong
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harm
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discount
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treatment
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decrease
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favor
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trying to reason
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tried to reason
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for trying to reason
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to trying reasoning
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get
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take
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do
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have
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Had
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If
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When
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Unless