Alaska is the largest state in the United States
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To rank the projects according to their profitability index is the best way to find the optimal solution in a situation of single period rationing with divisible projects?
田园综合体是以田园景观和农业生产为基础,以_______充分参与为核心,以综合开发为手段,以村容绿、村业兴、村民富为目标,以观光休闲功能为主题的乡村发展平台。