单项选择题
A.acid B.sludge C.mechanical impurity D.salinity
The separating effect of oil separator is not very good...
单项选择题The separating effect of oil separator is not very good, the reason may be（）
A.too little seal water B.improper gravity disc C.oil discharging pump not working very well D.low water level of the working water
When separating fuel oil in oil separator, the separati...
单项选择题When separating fuel oil in oil separator, the separating quantity is（） of the real quantity.
A.100% B.80% C.1/2 D.1/3
When separating lube oil separator, the optimal separat...
单项选择题When separating lube oil separator, the optimal separating quantity is（）of the rated quantity on name plate.
A.100% B.1/2 C.1/5 D.1/3
