A.脫硫B.脫水C.脫氧D.脫烴
A.密封問(wèn)題B.軸承磨損C.葉輪過(guò)小D.回轉(zhuǎn)件損壞
A.轉(zhuǎn)向錯(cuò)誤B.發(fā)生氣蝕C.進(jìn)口靜壓頭不足D.出口壓力過(guò)大