题目内容：
各种运输方式之间的基本关系主要有（ ）
A．垄断 B．竞争
C．渗透
D．协作
E．分割
参考答案：
答案解析：
多选题：各种运输方式之间的基本关系主要有（ ）
- 题目分类：中级运输经济(铁路)
- 题目类型：多选题
- 查看权限：VIP
B．竞争
C．渗透
D．协作
E．分割
B．竞争
C．渗透
D．协作
E．分割
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