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.

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.

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 （）.