为增加下一年的投资，以下哪种政策措施会更有效果？ a．对投资进行持久补贴； b．只在明年

实行暂时补贴。 C．b问的政策对今年的投资会有什么影响？ Which of the following policy measures would be more effective in raising next year’s investment？ a．A permanent subsidy on investment． b．A temporary subsidy effective only next year． c．What would be the effect of(b)on this year’s investment？