A.壓縮空氣吹掃B.氮氣吹掃C.溶劑油洗或水洗D.化學(xué)清洗
A.1.0MPaB.0.25MPaC.0.15MPaD.0.1MPa
A.0.2MPaB.0.1MPaC.0.02MPaD.0.01MPa