单项选择题
A.5.8MPaB.9.8MPaC.11.8MPaD.14.8MPa
A.30sB.60sC.120sD.180s
A.4620kJ/Nm3B.4855kJ/Nm3C.5200kJ/Nm3D.5369kJ/Nm3
A.40℃B.50℃C.60℃D.70℃
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