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【单选题】
数据库领域中主要的逻辑数据模型不包含下列哪种模型( )。A.
层次模型
B.
网状模型
C.
线性模型
D.
关系模型
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反馈参考答案：
举一反三
【简答题】B T om had got a summer job. He worked in a park every morning. he usually greeted the visitors at a gate, he answered their questions and gave them a map of the park. In the afternoon, he helped to s...
【单选题】护士为患者进行体位引流,不正确的是:
A.
确定引流体位很重要
B.
引流在进餐前30分钟前进行
C.
每天可引流1~3次
D.
每次引流时间可持续15分钟
E.
引流后辅以雾化吸入可增加引流效果
【简答题】Lucy got up early last Saturday morning. She wanted 1 with some of her friends in Green Park. She was very happy about it. 2 she was ready, she got on her bike and left for the park --- it was on the ...
【单选题】Was it in the park _____ he often did morning exercises _____ he met his beloved wife? [ ]
A.
that; that
B.
where; where
C.
where; that
D.
that; where
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