A.1 B.2 C.3 D.4
A.50mmB.65mmC.80mmD.100mm
A.細(xì)實(shí)線B.細(xì)點(diǎn)劃線C.粗實(shí)線D.細(xì)虛線
A.閥門 B.泄水裝置 C.疏水閥 D.排氣裝置