爆破作业,应实施()。
A.干式打眼作业
B.降低煤尘浓度
C.水炮泥封眼
D.“三人连锁放炮”制度
E.湿式打眼
F.冲洗煤帮
参考答案:B, C, D, E, F
— I hope the Beijing 2008 Olympic Games will be _____ of all.
— Me, too. It sure will be! [ ]
A. exciting
B. better
C. more important
D. the most successful
诊断结肠癌最可靠的依据是()
A.X线钡剂灌肠
B.血CEA检查
C.B超检查
D.CT检查
E.结肠镜并病理检查