矿石运搬方式选用电耙运搬方式时，受矿巷道可分为（）；（）；（）三种形式
参考答案：漏斗式、堑沟式、平底式
Only two of the students worked the maths problem out correctly. ______ all did it wrong. [ ]
A. Other
B. Others
C. The other
D. The others
辩证唯物主义认识论怎样理解认识？
