题目内容：
有理数是正整数、负整数、正分数、负分数和零的统称，此有理数概念的定义方法是（ ）．
A．递归定义 B．关系定义
C．处延定义
D．发生关系
参考答案：
答案解析：
单选题：有理数是正整数、负整数、正分数、负分数和零的统称，此有理数概念的定义方法是（ ）．
- 题目分类：小学数学
- 题目类型：单选题
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B．关系定义
C．处延定义
D．发生关系
B．关系定义
C．处延定义
D．发生关系
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