题目内容
氢气的爆炸极限范围是_______。
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Jill Davis tells her broker that she does not want to sell her stocks that are below the price she paid for them. She believes that if she just holds on to them a little longer they will recover, at which time she will sell them. What behavioral characteristic does Davis have as the basis for her decision making？
易燃固体在储存、运输、装卸过程中，应注意轻拿轻放，避免出现摩擦、撞击等，是因为它具有_______的危险特性。
对已收集的健康相关信息从哪几个方面进行信息管理？
粉尘爆炸具有多种危害，关于它的危害性，下列说法不正确的是_______。
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