单项选择题
A.1bar=14.5psi B.1bar=45psi C.1bar=29psi D.1bar=100psi
A.1bar=10kPa B.1bar=1000kPa C.1bar=1kPa D.1bar=100kPa
A.真空度 B.巴 C.磅每平方英寸 D.大气压
A.0.2~0.4Mpa B.0.5~0.7Mpa C.2~4Mpa D.0.05~0.08Mpa
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