一、信息化社会需要加强计算机基础知识的教育 从20世纪的60年代开始。一场新的信 息革命悄然来临,它把人类带到信息化社 会。与这个社会相应的社会技术是信息技 术,它的核心是计算机技术。由于这项技 术在人类历史上大大改变了人类创造物质 财富和精神财富的方式、方法、过程和结 果,也改变了社会结构和人类自身的生活 方式、习俗等,因此引起社会各部门的重 视

一、概述(basic facts) 二、定义由化脓性细菌引起的脑膜炎症的统称

If the salinity(含盐量)of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the subtraction of water from the ocean by means of evaporation-conversion of liquid water to water vapour. In this manner,the salinity is increased, since the salts stay behind. If this is carried to the extreme,of course, white crystals of salt would be left behind; this, by the way,is how much of the table salt we use is actually obtained

asic life support(BLS)includes recognition of signs of means that in the first minutes after collapse the victims sudden cardiac arrest(SCA), heart attack, stroke, and chance of survival is in the hands of bystander foreign-body airway obstruction(FBAO); cardiopulmonary Shortening the EMS response interval increases survival resuscitation (CPR); and d

一、两类数据控件 二、数据连接控件 三、用于连接数据库

一、文件系统控件 1 驱动器列表框 DriveListBox 2 目录列表框 DirListBox 3 文件列表框 FileListBox 二、文件处理语句 三、文件系统对象 FileSystemObject(FSO) 四、传统的文件I/O语句

一、公共对话框 二、自制对话框

一、子程序(Sub过程) 二、函数(Function过程) 三、参数传递 四、过程的嵌套调用和递归调用 五、鼠标和键盘事件

一、利用控件输入、输出 二、文本框的Text属性,V/O 三、标签的 Caption属性, Output 四、对话框

7.1 Basic concepts on soft-switching 7.2 Classification of soft-switching- techniques 7.3 Typical soft-switching circuits and techniques