题目内容：
掏槽眼的作用是什么，按掏槽眼的方向分为哪几类？
参考答案：
选择题：掏槽眼的作用是什么，按掏槽眼的方向分为哪几类？
- 题目分类：河南理工大学-采矿工程-井巷工程
- 题目类型：选择题
- 查看权限：VIP
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