以下哪项（ ）不属于污染预防措施 Which of the following is not a pollution prevention measure（ ） A: 改进工艺以减少环境排放废物 Improving the process to reduce environmental emission B: 加强管理减少废物 Improving management to reduces waste C: 选用低风险材料替代高风险材料 Using low-risk materials instead of high-risk materials D: 将废物转运异地焚烧填埋 Transporting waste to other sites for incineration and landfill