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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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单选题When the ship is going to enter into the harbor,（）A
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单选题If oil density were greater than water’s, the oil separator （）.A
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单选题The oil （） in the discharging water from oil water separator exceeds 15 PPM without alarm, because the coil was burnt out.A
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单选题In a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is free to rise into the oil collecting space Whats the meaning of "it" in the sentence above?（）A
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考题
单选题（）can cause oil flow from water outlet of a separator.A
Oil inlet valve opening too quicklyB
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单选题Which of the following is wrong about operation of oily water separator?（）A
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考题
单选题If found oil when we open low oil level plug of separator, it indicates （）A
the separator is overloadB
the monitor equipment of separator failsC
the discharge pump of separator can not workD
the temperature of oil water is low
考题
单选题When oily water separator is operating, which measure （） is wrong.A
pay attention to operating parametersB
renew and clean separating units in timeC
check oil level in separator to prevent overloadD
check separating effect, if it is bad, flush with large capacity water pump
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cut off the oil inletC
open guide water valveD
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High level tank out of water
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separating oil too fastB
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单选题The time of discharging oil is short, but oily water separator discharges oil frequentlyThe possible reason is （）A
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the coarse strainer before the pump in suction system is cloggedC
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考题
单选题Here some oil in the oily water separator, as a result of its lower （）, will separate and rise into the oil collection space.A
temperatureB
viscosityC
densityD
velocity
考题
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80%C
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flushing separator with hot waterB
increasing water supply flowC
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单选题When the ships is going to enter into the harbor,（）.A
change from diesel oil to heavy fuel oil for mail engineB
pump out bilge waterC
change sea chest form lower level one to high level oneD
test emergency generator
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