多项选择题

A、先采用含氯或含溴消毒剂1000mg/L~2000mg/L浸泡30min~45min
B、有明显污染物时应采用含氯消毒剂2500mg/L~5000mg/L浸泡至少60min
C、有明显污染物时应采用含氯消毒剂5000mg/L~10000mg/L浸泡至少60min
D、先采用含氯或含溴消毒剂500mg/L~1000mg/L浸泡30min~45min
E、以上都不对