https://www.ettoday.net/news/20170314/884126.htm
近期,网上非常流行一个生活小技巧,据说出远门时只要在冰箱里放一枚硬币,回家时就可以确定冰箱的食物是否还可以吃了。到底这是怎么一回事呢?我们都知道,冰箱里的食物最怕遭遇停电,如果停电时间长会加快冰箱里的食物变质。即便断电时间不长,食物也会加速变质。而当几个小时后冰箱恢复供电,由于通电后还有个降温的过程,食物中细菌的基数其实已经大大超过此前,使得食物的保质期大大缩短。当我们出远门时,对于断电通常无法察
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