社区慢性病管理所使用的健康调查表一般包括哪些内容?
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氢气的爆炸极限范围是_______。
A. 4.1%~74.2%
B. 12.5%~74%
C. 5.3%~15%
D. 以上都不对
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。
A. 燃点低,易点燃
B. 遇酸、氧化剂易燃易爆
C. 本身或燃烧产物有毒
D. 自燃性