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省到水電：Bal b/f TW$20,075+TW$365=TW$20,440 Bal c/f
https://tw.news.yahoo.com/%E5%AD%B8%E6%B8%AC%E8%80%83%E7%94%9F%E4%BD%9C%E7%AD%94%E5%AF%AB%E5%87%BA%E5%85%A8%E5%8F%B0%E7%81%A
https://www.hk01.com/%E7%AA%81%E7%99%BC/436469/%E8%B1%AA%E6%99%AF%E8%8A%B1%E5%9C%92%E8%99%90%E7%95%9C%E6%A1%88-%E6%8E%9F%E5%
https://zh.m.wikipedia.org/wiki/%E5%90%84%E5%9C%8B%E5%85%B5%E5%BD%B9%E5%88%B6%E5%BA%A6