当前位置：在线题库搜索＞[单选题]一次文献、二次文献、三次文献是按照( )进行区分的。的答案是什么？
问题：
[单选题]
一次文献、二次文献、三次文献是按照( )进行区分的。
A、加工深度
B、原创的层次
C、印刷的次数
D、评论的次数
参考答案：
A
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