A.1Pa=9.80665mmH2O B.1標(biāo)準(zhǔn)大氣壓=101.325kPa C.1mmH2O=9.80665Pa D.1MPa=1000kPa
A.1m2 B.106mm2 C.1m3 D.10m2
A.檢定合格證 B.產(chǎn)品合格證 C.準(zhǔn)用證 D.計(jì)量器具許可證