[简答题]

2011年2月21日，某化工厂发生一起火药爆炸事故，造成22人死亡，3人受伤，约200m²及部分机器设备被炸毁，直接经济损失40.48万元。
事发当时，该厂84^＃车间条装工序一螺旋输送器空心螺杆在运行中断裂，车间副主任熊××(事故中死亡)了解情况后，为了不影响生产，在生产继续进行，现场人员未撤出的情况下，违章指挥无证焊工甲(事故中死亡)焊接输送器。专职安全员乙即到厂部办理“动火证”。因安全科2名干部及4名正副厂长均因工外出，乙便自己写了一张“84^＃车间需要动火，条装工序一螺旋动火焊接”的便条动火证，去找厂办主任丁审批。丁说自己无权审批，便与乙一起找到厂工会主席丙。丙便在便条动火证上签署了“同意动火，注意安全”，越权擅自批准动火。乙回到车间，将丙签发的便条动火证交给甲，并对欲焊接处0.7m²范围内的炸药进行清扫、冲洗。然后，由乙同意并监护无证焊工甲焊接螺旋输送器螺杆。约20分钟后，乙发现空心螺杆内有残存炸药，并有大量烟雾从断裂处喷出，但甲认为：“炸药清洗不出来，没办法，可能问题不大”。乙便用水冲洗螺杆降温，甲进行违章施焊。乙因事离开车间。约10分钟后，该车间发生爆炸。
根据以上场景，回答下列问题：

这起事故中存在的物的不安全状态和人的不安全行为分别是什么

A—to hold a meeting B—working party
C—meeting in camera D—opening sitting
E—final sitting F—formal sitting
H—study group I—budget committee
J—drafting committee K—committee of experts
L—advisory committee M—board of directors
N—executive council O—standing body
P—committee

After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day.
There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.
Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement.
If you have trouble falling asleep, some people recommend breathing very slowly and very deeply. Other people believe that drinking warm milk
A. Sleep
B. Good Health
C. Dreams
D. Work and Rest