Qt xml解析

重大环境危险源管理仅供参考-major source of environmental risk management is for reference only

清华大学数据结构课上实现的B+树，设计一个4阶B+树，包括： (1) 叶子的每个记录应该包括4字节（long）关键码值和60字节的数据字段(存储文件名等，可以自定)，设每个叶子可以存储5条记录，而内部节点应该是关键码值/指针对。此外，每个节点还应该有指向同层下一个节点的指针、本节点存储的关键码数等； (2) 此4阶B+树应该支持插入、删除以及根据给定关键码值进行精确检索与关键码范围检索； (3) 显示（打印）此4阶B+树的生长(含删除节点)过程实例；-Tsinghua University class data structure to achieve the B-tree, the design of a B-tree four bands, including : (a) the leaves of each record should include 4-byte (long) key code value and 60 gigabytes of data fields (document storage, etc., can be set), set up each leaf store five records, and internal nodes is the key code value/means against. In addition, each node should have the same point under a layer of the target node, the node storage key code number; (2) The B-tree four bands should support the insertion, deletion and with the given key code value accurate retrieval and key codes scope retrieval; (3) Display (Print ) This four bands B-tree growth (including the deletion of nodes) process examples;

三层物资管理程序源码-three source material management procedures

通过随机数据比较各排序算法的关键字比较次数和关键字移动次数，以及执行时间，取得直观感受。 实现各排序算法，分别进行以下各组比较，并进行总结。

题目：设有一航班售票系统，要求完成以下功能： 1）假设该民航有若干航班，要求实现增加航班和取消某个航班的功能。 2）查询：根据用户提出的终到站查询航班号、售票情况等航班信息；也可根据航班号，列出该航班已订票的乘客名单。 3）订票：根据航班号为客户订票，如该航班有余票，则为客户订票；如该航班已满员，则显示相应信息。 4）退票：按乘客要求退出已预定的机票。 -Topic: First flight with the ticketing system, required to complete the following functions: 1) It is assumed that the Civil Aviation have a number of flights, calls for increased flights and cancellation of a flight functions. 2) query: Based on user queries raised by the end of the arrival flight number, booking flight information, etc. also available under the flight number, listed in the flight

这是一个有关于VC++6.0与数据库ACCESS相结合的小程序-This is a database on the VC++6.0 with a combination of small programs ACCESS

C#编写的OleDb数据库连接通用类库。-C# OleDb prepared by the General Class Database Connection.

oa办公系统，VB与SQL相结合的，实现了数据的收发功能-oa-office systems, VB and SQL combined to achieve a data transceiver functions

一个很好的员工信息管理系统-a good staff information management system

ＰＯＪ　１１２５己ＡＣ源代码，不信你可以试试．-POJ 1125 F AC source code, do not believe you can try.