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单选题
The separating effect of oil separator is not very good, the reason may be（）
A
too little seal water
B
improper gravity disc
C
oil discharging pump not working very well
D
low water level of the working water
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The requirement to carry an Oil Record Book does not apply to a ship that ______.A.is not equipped to discharge overboard any oil or oily mixtureB.is on an international voyage to a country that is a party to MARPOLC.has an International Oil Pollution Prevention CertificateD.has an oily water separator of sufficient capacity for the oil wastes generated
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单选题If oil density were greater than water’s, the oil separator （）.A
did workB
would work wellC
didnt workD
wouldnt work
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单选题The following measures can be used to improve oily water separator’s separating effect except （）A
overhauling every two yearB
working at intervalsC
renewing filtration materialD
pumping bilge water from different layers respectively
考题
单选题If separating effect is not good, which measure should be taken （）A
working at intervals and properly heatingB
warming up to 70℃, increase water supply flowC
improving impulse of water supplyD
reducing water supply flow
考题
单选题I remember （）the oil separator the day before yesterday But it failed again.A
to repairB
to be repairedC
repairingD
being repaired
考题
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
filterB
holeC
pollutionD
content
考题
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
a separatorB
oilC
waterD
an oil collecting space
考题
单选题The （）is not a component of an oil separator.A
sliding bowl bottomB
gravity discC
separating discD
scum valve
考题
单选题The younger motorman as well as the others （） to operate the oil separator.A
has learntB
have learntC
learnD
are learning
考题
单选题Which of the following is wrong about operation of oily water separator?（）A
filled with clean water before operationB
keep air cushion in oil collecting space during runningC
check oil level during runningD
clean inner separator with low pressure stream
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
考题
单选题When finish work on the oil separator, you should（）firstly.A
cut off the powerB
cut off the oil inletC
open guide water valveD
close oil outlet value
考题
单选题In an oily water separator the oil will travel （） to the oil collecting spaces.A
upwardsB
downwardsC
outwardsD
forwards
考题
单选题As to the piston cooling, of the following, which statement is not true?（）A
Because the piston is exposed to very high temperature, it must be cooledB
The lower the piston cooling temperature is, the better it isC
Both water and lube oil can be used as coolantD
One of the piston cooling methods is vibration cooling, with better effect
考题
单选题（）can cause oil flow from sludge outlet of self cleaning separator.A
Too much sludge accumulated in separator bowlB
Diameter of gravity disc too largeC
High level tank lack of waterD
Oil input too rapidly
考题
单选题A centrifuge of which the bowl is arranged as the upper and lower parts separate discharges the sludge（）A
by opening the separator manuallyB
by separating the lower part from the upper part automaticallyC
by separating the upper part from the lower part automaticallyD
continuously
考题
单选题The remaining oil/water mixture now flows down into the fine separating compartment and moves slowly between the（） in the Turbulo separator.A
catch platesB
swash platesC
cover platesD
bedplates
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单选题In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）A
lubricating oilB
dry sumpC
circulated tankD
wet sump
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
单选题What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?（）A
more economicB
larger capacity on oil treatmentC
less costiveD
more capable of separating emulsified oil
考题
单选题When separating the lube oil without additive, it is usually cleaned with hot water; the aim is to remove （） from it.A
acidB
sludgeC
mechanical impurityD
salinity
考题
单选题When separating lube oil separator, the optimal separating quantity is（）of the rated quantity on name plate.A
100%B
1/2C
1/5D
1/3
考题
单选题When separating fuel oil in oil separator, the separating quantity is（） of the real quantity.A
100%B
80%C
1/2D
1/3
考题
单选题If separating effect is not good, we can improve it by （）A
flushing separator with hot waterB
increasing water supply flowC
heat oily water properlyD
opening manual oil discharge value
考题
单选题（） is the breakdown of surface tension between oil droplets in an oil water mixture which causes them to join and increase in size.A
WearB
ContaminatingC
CoalescenceD
Coarse separating
考题
单选题The requirement to carry an Oil Record Book does not apply to a ship that（）.A
is not equipped to discharge overboard any oil or oily mixtureB
is on an international voyage to a country that is a party to MARPOLC
has an International Oil Pollution Prevention CertificateD
has an oily water separator of sufficient capacity for the oil wastes generated
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