Duringpurification,ifthewhichofthefollowingoperatingwatertankisempty,malfunctionswillappear?()
A、Someoilwillflowfromthewateroutletoftheseparator.
B、Therewillbesomewaterinthepurifiedoil
C、Someoilwillflowfromthesludgeoutletoftheseparator.
D、Ifdischargingthesludgetherewillbenoflushingwater