單項選擇題

The pressure difference of the gauge on the oily water separator increases greatly, the reason is（）

A.the filter is clogged
B.bilge suction value is clogged
C.suction value and discharge value of the pump do not open fully
D.screw pump is worn seriously and volumetric efficiency is decreased

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單項選擇題

Oily water separator mis-alarms, the most possible reason is （）

A.separating oil too fast
B.the sensor flushed badly
C.the discharge solenoid value out of order
D.too low heating temperature

單項選擇題

Because the flow rate of supply water pump is too large, oily water separator does not work wellWhich of the following is not the reason?（）

A.the monitoring equipment is out of order
B.separating effect becomes bad
C.inner wall is contaminated
D.separating effect becomes bad and inner wall is contaminated