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