A.-600mmH2O B.-800mmH2O C.0mmH2O D.800mmH2O
A.600mm水柱,0.1Mpa B.0,0.1MPa C.0,0.02Mpa D.600mm水柱,0.02Mpa
A.擰緊彈簧使擋板靠近一點(diǎn)噴嘴 B.擰松彈簧使擋板離開(kāi)一點(diǎn)噴嘴 C.沿主杠桿下移一點(diǎn)反饋波紋管 D.沿主杠桿上移一點(diǎn)反饋波紋管