单项选择题
A.Sodium hydroxide B.Sodium carbonate C.Sodium nitrate D.Sodium polyphosphate
Coalescence is the breakdown of surface tension between...
单项选择题Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.
A.expand B.extract C.increase D.decrease
When in operation, it is unavoidable that a small amoun...
单项选择题When in operation, it is unavoidable that a small amount of oil （） through leakage, and in order to compensate for these leaks the system is connected to a feed pump.
A.escapes B.overheats C.expands D.accelerates
For a L√Opurifier, if the back pressure of the oil outl...
单项选择题For a L√Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will （）.
A.be interrupted B.move downwards C.move outwards D.retain original position
