试题与答案

应用数据库的主要目的是( )。 A.解决数据保密问题 B.解决数据完整性问题 C.

题型:单项选择题

题目:

应用数据库的主要目的是( )。

A.解决数据保密问题
B.解决数据完整性问题
C.解决数据共享问题
D.解决数据量大的问题

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析: 一般分子结构对称的双原子气体,无发射和吸收辐射能的能力,而三原子、多原子气体和结构不对称的双原子气体具有一定的辐射和吸收能力。

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