A.液位高B.基礎(chǔ)不均勻沉降C.管線振動D.進油速度快
A.定整改措施B.定責(zé)任人C.定整改時間D.定應(yīng)急預(yù)案
A.輸送介質(zhì)粘度增大B.電機軸承損壞C.泵流量增大D.泵轉(zhuǎn)子與殼體產(chǎn)摩擦