题目：
斜井跑车事故产生火花，可引起井下（）爆炸。
A、煤炭
B、煤尘
C、矸石
D、瓦斯
答案：
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参考答案：（1）建立生产扶持制度；（2）建立利益均沾制度；（3）建立自我保护制度；
斜井跑车事故产生火花，可引起井下（）爆炸。A、煤炭 B、煤尘 C、矸石 D、瓦斯
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