单项选择题
A.large size of oil globule B.low temperature C.high viscosity D.high flow rate
When started, a complete oily water separating unit is ...
单项选择题When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.
A.with dirty water B.with clean water C.by oily water D.by mixed water
In an oily water separator the oil will travel （） to th...
单项选择题In an oily water separator the oil will travel （） to the oil collecting spaces.
A.upwards B.downwards C.outwards D.forwards
For a purifier changing to a gravity disc with smaller ...
单项选择题For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the（）.
A.bowl periphery B.bowl center C.upper surface D.lower surface
