问题
问答题 简答题
简述石门揭开煤与瓦斯突出煤层的施工方法。
答案
参考答案：
1震动放炮；
2金属支架超前支护；
3钻孔排放；
4水力冲孔。
搜题请搜索小程序“爱下问搜题”
简述石门揭开煤与瓦斯突出煤层的施工方法。
参考答案：
1震动放炮；
2金属支架超前支护；
3钻孔排放；
4水力冲孔。
| 补全对话。 | |||
| A: You are new here.Am I right? B: 1 ,you are right. A: 2 you come from England? B: 3 ,I'm from the U.S.A. A: Do you 4 En  glish?B: Yes,I do.What 5 you? A: I'm Japanese and I speak Japanese.I can speak 6 a little English. 7 you want to teach me English? B: Certainly.I can teach 8 English and you can teach 9 Japanese. A: That's good. 10 a lot. B: You're welcome. | |||
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