【单选题】【消耗次数：1】
概念模型描述的是（）
①
与数据库物理实现有直接关系的数据库
②
已经确定采用何种数据库管理系统的数据库
③
数据库的逻辑结构
④
从用户角度看到的数据库
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相关题目
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DB包含DBS和DBMS
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DBMS包含DB和DBS
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DBS包含DB和DBMS
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没有任何关系
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DBMS 包括DB 和DBS
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DB 包括DBS 和DBMS
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DBS 就是DB,也就是DBMS
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Sketch Book
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view of life
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view of death
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view of youth
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world outlook
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Chartist Movement
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Romanticism Movement
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Enlightenment Movement
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Modernist Movement
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Nature
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To a Waterfowl
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①
An increasing emphasis on the free expression of emotions.
②
An increasing attention to the psychic states of their characters.
③
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④
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mystery of the universe
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sin of the whale
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power of the Great Nature
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Cooper’s Leatherstocking Tales
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Hawthorne’s The Scarlet Letter
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Whitman’s Leaves of Grass
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Washington Irving
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Nathaniel Hawthorne
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Henry David Thoreau
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Walt Whitman
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brevity
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directness
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plainest words
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Typee and Omoo
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