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1·The sparks set fire to the oily rags.

火花使油布燃烧起来了。

2·Make sure that oily rags and easily combustible materials are stored away from fire hazards and are removed appropriately.

确保油布和易燃材料远离火灾危险区存放，并采取适当的方式将其从火灾危险区拿走。

3·Combustible scraps, debris and waste materials (e. g. oily rags) should be stored in covered metal containers and removed from the work site promptly.

易燃的废屑、碎料和废弃物料（例如油抹布）须存放在有盖的金属容器里，并即时搬离工作场地。