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[判断题]
已知某石油产品15℃密度为750.2kg/m3,查GB/T1885石油计量表得,15℃密度750.0kg/m3和752.0kg/m3
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A.818.7
B.819.7
C.820.3
D.820.6
A.0.9784
B.0.97849
C.0.97848
D.0.97847
A.930.8
B.930.0
C.929.8
D.929.0
已知某物体的体积为2m2,所含质量为8kg,则其密度为()kg/m3。
A.8
B.6
C.4
D.2
已知某原料罐高度为15.6m,直径为5m,其中可以盛装原料为()吨。(已知原料的密度0.765t/m3)
A.228.2
B.229.1
C.234.2
D.234.5
A.15
B.20
C.24
D.10