采掘工作面的瓦斯检查次数：低瓦斯矿井中每班至少（）次。
A、2
B、3
C、4
参考答案：A
T2水抑制成像为黑色（）
A.游离水
B.结合水
C.肝
D.肾
E.空气
— How do you like the TV play?
— ____ [ ]
A. It's wonderful.
B. What about you?
C. Yes, I like it.
D. No, I don't like it at all.
