建立分析数据库的原则不包括( )。
A.功能明确B.结构简单C.便于操作D.易于分析
参考答案:D
解析:建立分析数据库的原则有:功能明确、结构简单、便于操作。
We were badly treated in the hospital.
Don’t worry.The president has promised to ______ your complaint at once.
A.look up
B.look into
C.look back on
D.look forward to
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