在启蒙时期，人们的理想就是什么（）A、改良B、改革C、原创D、革命

洗手指征不正确的是（）

A.接触病人前后应洗手

B.接触有破损的皮肤、黏膜前后要洗手

C.进行侵袭性操作前后要洗手

D.进行无菌技术操作前后要洗手

E.戴无菌手套后要洗手

2009年12月20日，这个时刻属于祖国的澳门。今日澳门，经济发展，民生改善，社会安定，一派欣欣向荣景象。事实证明[ ]

A．“一国两制”方针具有强大生命力

B．澳门同胞有智慧、有能力、有办法管理好、建设好、发展好澳门。

C．伟大祖国始终是澳门的坚强后盾

D．“一国两制”方针是完全正确

（）是现代化物流的基础和保证。

A.现代化的信息系统

B.现代化的资金管理

C.现代化的商流管理

D.现代化的网络系统

1998年7月12日17时10分，深圳市宝安区沙井镇上星村第三工业区的深圳市智茂电器制品厂发生重大火灾事故，造成17名员工死亡(4男，13女)，重伤18名，轻伤40名，烧损4450m²的四层厂房一栋，烧毁电风扇半成品、原材料一批，直接经济损失约 200万元。
6月12日17时10分左右，智茂电器制品厂搬运组组长杜干与员工农历成、刘三毛从二楼拉拖车下楼，在一楼大门左侧楼梯口搬运纸箱装货，员工冯福林从三楼下到一楼门口等待下班打卡，杜平等人听到有人呼叫“着火了”，发现仓库东南角堆放纸皮处有较大浓烟和火光冒起，相继跑出大门处。此时正在一楼仓库内工作的仓管员彭乐江、彭维佳及来料质量控制部丁继红、王福超四人也听到“着火了”，彭乐江并听到灯管被烧得噼里啪啦的作响，认为是电线着火，随即拉下电闸，切断电源。因见到火势很大，彭等四人都向大门外跑去，在二、三楼工作的十余名员工也正陆续下楼准本下班打卡，发现烟火之后争相往外跑。此时，火已烧到大门处，由于烟囱效应，浓烟迅速沿楼梯涌上，夹杂浓烈的塑胶气味，楼上的员工已无法下楼。由于四楼楼面通道被防盗门锁住，大部分员工无法上到楼顶，只有7名员工撬开防盗门的门板到楼顶。
17时30分51秒，才接到火警报告(报警不及时)的宝安区消防大队迅速调派6台消防车(1台云梯登高车、1台照明抢险车、4台水罐消防车)和300名指战员，与17时38分到达火灾现场，随后展开援救和灭火工作，消防人员利用云梯登高车从天台和四楼抢救被困人员46名。其中24人在指挥员的引导下跳楼逃生，另有3人沿水管爬下。宝安区消防大队随后增派一台云梯车、一台照明抢险车、7台水罐车，赶赴现场，于18时46分终于将大火扑灭，有效地阻止了火势向周边建筑物蔓延(东面为该厂写字楼，西北面为另外两家工厂)。
智茂电器制品厂由于日光灯松脱，镇流器发热，使堆放在他较近的纸皮引燃发生火灾，虽是偶然事件，却造成巨大的人员伤亡，厂方有不可推卸的责任。
问题：

如何正确使用和维护建筑灭火器

Many people are concerned about the economic condition of developing countries — countries whose average per capita GNP is a fraction of that in more industrialized countries. However, for the developing countries, there exist many obstacles to their economic development.
One major obstacle to economic development is population growth. (46) The populations of most developing countries grow at a rate much faster than those of industrialized countries, and the population of some of them is so large that there is barely enough fertile land and other resources to support it. Many less developed countries depend extensively on agriculture, adding to the problem. In these countries, an incentive to have many children exists. (47) Most farms are worked by families, and children can work in the fields at an early age because most farmers believe that more children means more workers. In addition, having many children ensures the parents that someone will look after them in their old age.
Another problem for developing countries is increasing average life expectancy—the average remaining lifetime for persons who reach a certain age. Better education, international aid, and emphasis on health-care facilities help people live longer. A high life expectancy coupled with a high crude birthrate makes it difficult to increase per capita GNP.
Another obstacle to economic growth is limited natural resources. No country can develop beyond its resource potential. Unproductive land or a harsh climate can limit economic growth. (48) Some countries may be fortunate enough to discover a valuable mineral to finance their economic development, but most focus on agriculture and, as a result, their economic growth is hindered by the shortage of natural resources or energy sources needed for industry.
Still another obstacle to economic development is a lack of appropriate education and technology. Any developing countries do not have a highly literate population or the high level of technical skills needed to build an industrial society. In addition, most do not have money to train engineers and scientists. (49) Many developing countries cannot even afford to provide free public education for school-age children, and in those that can, not every child is able to take advantage of it because most of them have to work to help feed their families. As a result, much of the population may not have the basic skills needed to continue with higher education when it is offered.
Government also can be an obstacle to economic development. A country whose government often changes will have a hard time developing economically. Such constant changes impede long-term planning. (50) Economic development is made even more difficult if the political changes occur through violent revolution where industrial facilities may be destroyed.