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水是稀缺资源,我们要节约用水。前段时间,我发现每次冲马桶用的水都太多了,于是我决定打开水箱,观察水箱是怎么运作的。原来水箱容积很大,每次冲水后,新的水开始注入,直到到达固定水位线才会停止。要怎么改造马桶水箱呢?我想到《乌鸦喝水》这篇课文,乌鸦为了让水位升高,就往水里丢小石头。如果往水箱里加入既重又占容积的物品,这样每次注水时不就可以快点到达固定水位线,注入
Water is a scarce resource, we want to save water. Some time ago, I found that every flush of toilet water used too much, so I decided to open the tank to observe how the tank works. The original tank volume is large, each flush, the new water began to inject, until it reaches a fixed water line will stop. How to rebuild the toilet tank? I think “crow drink water,” the text, the crows in order to raise the water level, throwing small stones into the water. If you add to the water tank both account for the volume of goods, so each time you do not water can quickly reach a fixed water line injection