多项选择题
A.1Pa=9.80665mmH2O B.1标准大气压=101.325kPa C.1mmH2O=9.80665Pa D.1MPa=1000kPa
A.1m2 B.106mm2 C.1m3 D.10m2
A.检定合格证 B.产品合格证 C.准用证 D.计量器具许可证