单选题If found oil when we open low oil level plug of separator, it indicates （）Athe separator is overloadBthe monitor equipment of separator failsCthe discharge pump of separator can not workDthe temperature of oil water is low
单选题
If found oil when we open low oil level plug of separator, it indicates （）
A
the separator is overload
B
the monitor equipment of separator fails
C
the discharge pump of separator can not work
D
the temperature of oil water is low
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