单项选择题
A.1.293kg/LB.0.5788kg/LC.1.2506kg/LD.0.7300kg/L
A.1.293kg/LB.1.2506kg/LC.0.5573kg/LD.0.9875kg/L
A.3.5690kg/LB.2.6592kg/LC.1.0230kg/LD.0.7025kg/L
A.气态B.液态C.固态D.固、液共存
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