在复合转炉冶炼过程中,选择底吹供气强度的依据()
A.钢种
B.铁水成份
C.脱碳递度
D.冶炼时间
参考答案:C
世界七大洲中,面积最小的一洲是[ ]
A.非洲
B.大洋洲
C.欧洲
D.南美洲
The villagers collected money to set up a monument ________ those who died in the great earthquake.
A.in charge of
B.in place of
C.in need of
D.in memory of