In the aspect of contract ' s design , its include the determination of contract value , minimum fluctuation of price , last settlement price and margin level etc . in risk management of stock index futures , the means of price ' s stabilization , the ways of avoid of market manipulation , the clearing member and market margin system and so on have been put in operation 在股指期货合约设计方面，主要体现在合约价值、最小价格波动、最后结算价、保证金水平等方面的确定方式。在股指期货风险管理方面，主要采用股指期货市场价格稳定措施、对市场操纵的防范措施、股指期货市场结算会员制度、市场保证金制度等。
Along with national macroscopic control , the market of road project becomes more and more competitive , such as the price of contract is worse . the industry is threshed by three market injections , that is increasing material price , the lowest acceptance and cash guarantee . the above make the industries of road project under the situation of the lower profit and harder capital running and greater competition pressure 随着国家的宏观调控,公路工程建筑市场竞争日愈加剧,其承包价格战进入了白热化阶段,而且自2003年以来,还不断受到建筑原材料价格上涨、最低价中标制度、现金保证金制度三个市场因素的严酷冲击,直接导致公路工程施工企业利润大幅下滑和资金运转困难,企业面临极大的竞争压力,生存环境不容乐观。
