单项选择题
A.5000mB.6500mC.7000mD.7500m
A.-0.02MPaB.-0.04MPaC.-0.05MPaD.0.12MPa
A.0.3~1.2MPaB.1.2~2.0MPaC.2.4~2.8MPaD.2.8~3.6MPa