A.閥門內(nèi)滲,高位油罐的油品流入低位油罐 B.管道內(nèi)滲,高位油罐的油品流入低位油罐 C.閥門外滲,高位油罐的油品流入低位油罐 D.管道外滲,高位油罐的油品流入低位油罐
A.泵的轉(zhuǎn)向不對(duì) B.軸瓦間隙太小 C.軸或軸套磨損 D.密封端面損壞
A.壓力表和真空表讀數(shù)比正常小 B.常常不穩(wěn)定甚至降到零 C.壓力表和真空表讀數(shù)比正常大 D.壓力表比正常小而真空表讀數(shù)比正常大