单项选择题
A.0.3~0.5MPaB.0.15~0.4MPaC.0.2~0.3MPaD.0.3~0.4MPa
A.0.6~1.2MPa;14~18barB.0.2~0.6MPa;14~20barC.0.3~0.6MPa;14~18barD.0.5~0.6MPa;14~18bar
A.0.15~0.3MPaB.0.15~0.4MPaC.0.2~0.3MPaD.0.2~0.4MPa
A.瓶线:0.4~0.45MPa;听线:≥0.4MPaB.瓶线:0.4~0.5MPa;听线:≥0.5MPaC.瓶线:0.4~0.6MPa;听线:≥0.6MPaD.瓶线:0.4~0.7MPa;听线:≥0.7MPa
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