一、形式上创新1.引入较陌生的图形元素.如2016年高考全国新课标卷一的柱状图、卷三的折线图等.例1(2016年高考全国新课标卷一理科卷第19题)某公司计划购买2台机器,该种机器使用三年后即被淘汰.机器有一易损零件,在购进机器时,可以额外购买这种零件作为备件,每个200元.在机器使用期间,如果备件不足再购买,则每个500元.现需决策在购买机器时应同时购买几个易损零件, First, the formal innovation 1. The introduction of more unfamiliar graphic elements, such as the 2016 National College entrance examination of the new curriculum volume of a bar chart, volume three of the line chart, etc. Example 1 (2016 college entrance examination of the new curriculum a science volume 19 questions) A company plans to purchase 2 machines, this kind of machine is out of use after three years.The machine has a wearing parts, when buying the machine, you can purchase such spare parts as spare parts, each 200. In the machine During use, if the spare parts are not enough to buy, then each 500 yuan.Need to make decisions in the purchase of the machine should also purchase several vulnerable parts,