试题与答案

抹灰工程按施工工艺不同分为一般抹灰和( )抹灰工程。A.专业 B.复杂 C.装饰

题型:单项选择题

题目:

抹灰工程按施工工艺不同分为一般抹灰和( )抹灰工程。

A.专业

B.复杂

C.装饰

D.特殊

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析: 1NF直到BCNF的四种范式之间有如下关系:一个数据库设计如果符合2NF,一定也符合1NF。如果符合第三范式,一定也符合第二范式。满足BCNF的关系也必然满足3NF。因此B正确。

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