落实瓦斯防治的“十二字方针”（）。
A.先抽后采
B.监测监控
C.以产定风
D.以风定产
参考答案：A, B, D
选煤消耗清水量
The criminal，as well as some __________ people，was arrested by the police yesterday.[ ]
A．relevant
B．skilled
C．released
D．lucky
