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199×年×月×日16时左右，某公司甲酸合成装置因故障全系统停车进行检修，合成反应器甲醇喷管坏，需进合成反应器内进行维修。×月×日上午8时左右，打开合成反应器下部两个人孔进行通风，并从上部人孔加水进行冲洗。下午17时左右，应公司安全处要求打开最上部人孔进行通风。17时15分左右，安全处有关人员用可燃气体及氧气测定仪测定可燃气体不合格。此后，在17时15分～19时45分左右的一段时间内，每隔 15min测定一次，19时45分左右经测定，氧气：21%；可燃气体爆炸极限百分比为： 12%～18%。安全人员认为合格，随后签发“进罐人塔证”，并注明要佩戴长管呼吸器。 20时左右，乙公司2名架子工进入器内进行扎架子作业，甲公司2名操作工及乙公司1名临时工在器外进行监护。由于不方便，2名架子工未戴呼吸器。大约13min后，塔内传出求救声，监护人员及现场6名检修人员情急之下未戴呼吸器进塔救人，先后中毒，有7人勉强爬出。最后甲公司经理及合成工段工段长戴上呼吸器将塔内4人救出，立即进行现场急救并及时送往医院进行的抢救，此时大约是20时40分左右。乙公司1名临时工经抢救无效后死亡，其余人员脱离危险。 根据以上内容回答下列问题。 1．该合成反应器存在哪些事故隐患 2．当合成反应器内人员呼救，监护人员及现场6名检修人员未戴呼吸器进塔救人说明了什么应急培训与演习的基本任务是什么 3．试分析此次事故的经验教训。
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以下符合共同控制资产核算要求的是( )。
In 1848 a settler in distant, undeveloped California discovered gold near Sacramento. As the news spread, a great tide of gold-hungry men flowed into California. They came from all parts of the United States in tens of thousands. There were even gold-seekers from Europe. Some of the people move across the country by cart, traveling almost half a year and meeting many hardships and dangers. Other sailed all the way around South Africa, finally reached the California shore. Since the first discovery was of tiny pieces of gold at the bottom of a stream, many of them searched the waters of rivers for the precious bits of yellow metal. Others made channels to draw off flowing water in order to examine it carefully for bits of gold. They worked with almost full determination and fierce competition(竞争). Life was hard and rough in the days of the California gold rush. A few of the adventurers became rich, but most of them were bitterly disappointed. After having removed from their homes and after traveling the long, dangerous road to California, they had found little or nothing. Some returned home. But many remained in California to work and to settle as ordinary citizens without the riches they had dreamed of. It was this great arrival of population that built up California very fast and led to its becoming a state of the United States in 1850. Which of the following may be the best title of the passage
200×年×月×日，某镇煤矿发生瓦斯爆炸事故，事故死亡29人。 该煤矿上年产量3万吨，税利60万元，企业上年平均职工人数是105人，企业上年工作日数是300天，这次事故因人身伤亡所支出的费用是640万元，善后处理费用是130万元，财产损失价值达280万元，停产、减产损失价值20万元，资源损失价值30万元。 根据以上情形回答下列问题，1～5题为单选题，只有一个正确的答案，6～8题为多选题，有两个或两个以上的正确答案。 如果该煤矿上年全年的总产值是900万元，则该煤矿上年的百万元产值的经济损失率是( )。A．2.84B．13.6C．284D．331.4E．1050
患者女性，32岁。反复胸闷气急，咳嗽，查体：心界稍大，心率100次/分，律齐，S1增强，P2亢进，可闻及开瓣音，心尖部可闻及舒张中晚期隆隆样杂音。既往有“游走性关节炎”病史。 为进一步确诊，应首先考虑的检查是
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