矿井主要的充水水源有()
A.含水层水
B.地表水
C.钻孔水
D.大气降水
E.老窑积水
参考答案:A, B, C, D, E
— Are you still thinking about yesterday's party?
— Oh, that's ________. [ ]
A. what makes me feel excited
B. whatever I fell excited about
C. how I feel about it
D. when I feel excited
在OCC的DLP系统中设置了()块屏幕供CCTV使用。
A.6
B.9
C.12
D.15