A.0.5~0.6 B.0.8~1.2 C.1.2~1.4 D.1.4~1.6
A.用汽油做稀釋劑 B.涂膜太薄 C.干性油過(guò)稠 D.環(huán)境溫度太低
A.宜淡 B.宜深 C.不深不淺 D.可任意