行政组织与企事业组织、群团组织的区别包括( )A．管理对象不同 B．为社会所提供的

衡量城市化水平的最重要指标是[     ]

A．城市人口占总人口的比重

B．城市用地占土地总面积的比重

C．城市经济总量占区域经济总量的比重

D．城市数量占区域聚落数量的比重

砷盐检查法使用的仪器是（），干燥失重测定法使用的仪器是（），炽灼残渣测定法使用的仪器是（）

It was 1504,and Columbus was making another trip to the New World. Columbus and his men needed fresh water and food after three months at sea. They saw an island and went on shore. On the island there were unfriendly Indians who refused to give food to them. Columbus’ men were afraid of the Indians, but he had a clever plan. He used sign language to tell the Indians about his mysterious (神秘的) power to turn off the light in the sky. He knew about a lunar eclipse (月蚀) the next night because the information was in his almanac (天文历书). Columbus told the Indians, “ Tomorrow night I’ll turn off the light in the sky.” But they didn’t believe him . When the eclipse began the next night ,the Indians became very frightened . They begged Columbus to turn on the light again , and they quickly gave him all the food and water he wanted. Immediately Columbus and his men hurried back to the ship and sailed away in the moonless night.

小题1:Columbus and his men stopped at the island because_______________.

A．they wanted to meet the Indians there

B．they hoped to get supplies of food and water

C．they had never been on the island before

D．they had planned to visit it小题2:The Indians ___________ Columbus and his men.

A．were glad to see

B．were kind to

C．welcomed

D．were not kind to小题3:Columbus ________ to tell the Indians that he had mysterious power.

A．used movements of hands and expressions in his face

B．spoke in the language of the Indians

C．drew a lot of signs

D．wrote in the language of the Indians小题4:“The light in the sky ” here means __________.

A．the sun

B．the moon

C．the stars

D．the daylight小题5:The Indians gave Columbus food and water because they _________.

A．believed Columbus was a man with mysterious power

B．were interested in Columbus’ trip

C．wanted to help Columbus

D．were clever

总部位于A省的某集团公司在B省有甲、乙、丙三家下属企业，为加强和规范应急管理工作，该集团公司委托某咨询公司编制应急救援预案，咨询公司通过调查、分析集团公司及下属企业的安全生产风险，完成了应急救援预案的起草工作，提交给集团公司会议上进行评审。

评审时，集团公司领导的意见是：(1)集团公司和甲、乙、丙三家企业的应急救援预案在应急组织指挥结构上应保持一致；(2)集团公司有自己的职工医院和消防队，应急救援时伤员救治要依靠职工医院，抢险力量队伍要依靠集团公司的消防队；(3)周边居民安全疏散，应由集团公司通知地方政府有关部门，由地方政府组织实施；(4)应急救援预案中因部分内容涉及集团公司商业秘密，应急救援预案不对企业全体员工和外界公开，只传达到各企业中层以上干部；(5)应急救援预案要报A省安全生产监督管理部门备案。

近期，该集团公司完成了一套应急救援预案的演练计划，该计划设计的演练内容为：(1)打开液氨储罐阀门，将液氨排到储罐的围堰内；(2)参演人员在规定的时间内关闭阀门，将围堰内的液氨进行安全处置；(3)救出模拟中毒人员。

2008年3月6日，集团公司在甲企业进行了应急救援实战演练，演练地点设在甲企业的液氨储罐区，为保障参演人员、控制人员和观摩人员的安全，集团公司事先调来乙企业全部空气呼吸器、防毒面具、防爆性无线对讲机和检测仪器，同时调来集团公司消防队的所有水罐车、泡沫车和职工医院的救护车辆。演练从10点钟开始，按照事先制订的演练计划进行，10点20分氨气扩散到厂区外，由于演练前未组织周边群众撤离，扩散的氨气导致两名群众中毒，10点30分，抢救完中毒群众后，演练继续按计划进行。

根据以上场景。回答下列问题：

结合本案，简述事故应急救援的基本任务。