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焊接切割時,飛散的火花及金屬熔融碎粒滴的溫度高達1500℃~2000℃,高空飛散距離可達20m。下列焊接切割作業的注意事項中,正確的有()。

A、在可燃易爆區動火時,應將系統和環境進行徹底的清洗或清理
B、若氣體爆炸下限大于4%,環境中該氣體濃度應小于1%
C、可利用與可燃易爆生產設備有聯系的金屬構件作為電焊地線
D、動火現場應配備必要的消防器材
E、氣焊作業時,應將乙炔發生器放置在安全
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正確答案:

ADE

答案解析:

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