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化工生产防止火灾、爆炸的基本措施是限制火灾危险物、助燃物、火源三者之间相互直接作用。 正确答案、
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乙烯装置遍洗塔用氢氧化钠水溶液脱除硫化氢和二氧化碳，过程易燃易爆略有腐蚀。正确答案、
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安全带使用两年后，按批量购入情况抽验一次。正确答案、
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乙烯装置所用助剂二甲基二硫为无色或微黄色液体，接触后可引起头痛、恶心和呕吐。正确答案、
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