He said he would come to see us________next week.

A. sometime        B. sometimes    C. some time

水冷壁损坏现象是炉膛发生强烈响声，燃烧不稳，炉膛风压变正，汽压温度下降，汽包水位你，给水流量不正常地大于蒸汽流量，烟温降低等。