["Какова формула? Как она рассчитывается?", "Известно,что коэффи объема как某种渣油为6.6661×1-4，在11℃时的密度为11.1kg/m3，则其155℃时的密度为(　　)kg/m3。",,"На http://bbs.hcbbs.com/doc-doc.html上面下去",,"Общее количество не изменяется,по коэффи объема можно вычислить"]

2017-01-23View Original

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已知某种渣油的体胀系数是6.0661×10-4，20℃的密度是1021.0kg/m3,则其150℃的密度是(　　)kg/m3。

Reply #22017-01-23

http://bbs.hcbbs.com/doc-doc.html上里面下去

Reply #32017-01-23

总的质量不变，体积用膨胀系数计算应该能求出来

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