【判断题】
根据《危险化学品重大危险源辨识》乙烯的临界量为50T
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消防安全重点单位及其消防安全责任人、消防安全管理人应当报当地公安消防机构备案
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安全生产监督查理部门在生产经意单位现场检查时，发现现场作业人员有未按照要求佩戴、使用劳动防护用品的情况，应当当场予以证
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周围环境发生变化，形成新的重大危险源的应当及时修订应急预案
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同一种气体如苯，既属可燃气体又属于有毒气体时，应只设置有毒气体检测器
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事故报警的及时与准确是能否及时控制事故的关键环节
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进行有关化学液体的操作时，应使用防护面置保护面部
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机关、团体、事业单位应当至少每季度进行一次防火检查，其他单位应当至少每月进行一次防火检查
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裂解气压缩机油管不通畅、过滤网堵塞时，会造成轴瓦温皮高
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