判断+解析1.现用油罐车来装用煤油850吨,每一节油罐车的容积是50立方米,问共需油罐车几节?(煤油的密度是0.8×10的三次方千克/立方米)我的解法:850吨=850000千克,M=密度×体积=0.8×10的三次方千克/
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