並前往https://blog.xuite.net/aj_20071212/hkblog/91308934-%E9%A6%99%E6%B8%AF%E9%9D%9E%E7%89%9F%E5%88%A9%E7%8D%B8%E9%86%AB%E8%A8%BA%E6%89%80+NPV+%3A%3A