企业网络安全风险评价，详细描述了企业网络中存在的风险安全问题，内容详细-Enterprise network safety risk assessment, a detailed descr iption of the risk in the business enterprise network security problems, detailed text

固高卡GE-800-PG-PCI(ISA)编程资料，实现点位运动编程简单。-Googol card GE-800-PG-PCI (ISA) programming information, sports programming is simple to achieve points.

这是一本学习电力电子，建立模型，进行编程的好书(It isa good book that can learn power electronics, build models, and program.)