井下放炮后,会产生大量的()。 ["二氧化碳","二氧化氮","一氧化氮","瓦斯"]
井塌时,综合录井仪显示扭矩减少,振动筛岩屑增多。()
三星-N7108D与NOTE3(N9008V)的区别() ["屏幕大小","运行内存","处理器频率","处理器品牌"]
苹果(APPLE)iPhone5C和5S的共同点:() ["CPU一样","运行内存一样","摄像头像素一样","电池容量一样"]
井下挡风墙外的瓦斯浓度每周至少检查()次。 ["1","2","3","无明确规定"]
在综合录井资料解释中当资料出现异常时,应先检查(),在确定是否为()。