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.

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.

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（）.

For a purifier, changing to a gravity disc with larger ...

单项选择题For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the （）.