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“okayyayao”: 體積=重量÷密度 8公斤的水銀它的體積≈8kg÷13.6kg/dm³≈0.588dm³ 0.588dm³÷0.2dm³=2.94(個瓶) 答:至少要3個這樣的瓶子. 祝好,再見.========
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