高炉冶炼中常用哪些燃料？

A. 加入冷空气以优化区域温度；
B. 加入热空气以优化区域温度；
C. 调节热空气的压力

A. 水
B. 乳化液
C. 煤油
D. 切削油

A. call for help and keep the individual in sight
B. run to the radio room to send an emergency message
C. immediately jump in the water to assist the individual
D. go to the bridge for the distress flare