Chapter 2 analyzes the past and the present economic news and finds some problems , which are poor readability , low level of information service , superficial news , rigid pattern of news , absolutization of judgment , and lack of power of news on knowledge economy 第二章则是通过对过去、目前的经济新闻报道进行分析，从中找出存在的问题：可读性差、信息服务水平偏低、报道浅层化、报道模式僵硬化、判断绝对化、报道知识经济的新闻缺乏气势和力度。
2.
Conventional iec three ratio method and new iec ratio criterion are reduced according to the method of decision table in rough set theory respectively , simplified diagnosis rules are proposed . besides being identical with original iec method , the codes of conventional iec three ratio method are increased and bounds of new iec ratio criterion are augment by using this method , codes imperfectness of conventional iec three ratio method and code name absence of new iec ratio criterion are improved to some extent , scarcity of codes in conventional iec three ratio method is offseted , absolutization of sort and boundary in new iec ratio criterion is overcomed . this is important in practice for its flexibility and enhanced error tolerances 应用粗糙集理论中的决策表化简的方法分别对常规iec三比值诊断表和iec新导则诊断表进行了化简，得到了简化的诊断规则，它们不但具有与常规iec三比值法和iec新导则完全相同的诊断分类能力，而且扩充了常规iec三比值表的编码范围和iec新导则的诊断范围，在一定程度上改善了常规iec三比值表编码缺损和iec新导则无对应代号的问题，弥补了常规iec三比值法编码的不足，克服了iec新导则分类及边界的绝对化，使得iec诊断法在实际诊断中更具灵活性、实用性和容错性，提高了故障诊断能力。
