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单选题
Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?（）
A
The viscosity off the fuel
B
The quantity of water to be removed from the fuel
C
The specific gravity of the fuel
D
The quantity of dirt to be removed from the fuel
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更多 “单选题Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?（）A The viscosity off the fuelB The quantity of water to be removed from the fuelC The specific gravity of the fuelD The quantity of dirt to be removed from the fuel” 相关考题
考题
Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?A.The viscosity of the fuel.B.The quantity of water to be removed from the fuel.C.The specific gravity of the fuel.D.The quantity of dirt to be removed from the fuel.
考题
The main factor which determines the output of each cylinder is _____.A.the cylinder weightB.the cylinder boreC.the cylinder lengthD.the cylinder cover
考题
Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease
考题
A ship which is required to carry an Oil Record Book must log in the book ______.A.discharge of ballast or cleaning water from fuel tanksB.sounding levels of all fuel tanks on a daily basisC.the grade and specific gravity of all fuel oil carriedD.fuel consumption rates on a weekly basis
考题
Which substance is NOT considered to be Oil under the pollution prevention regulations?A.Petroleum and fuel oilB.SludgeC.Oil mixed with dredge spoilD.Oil refuse and oil mixed with wastes
考题
What protection method is used in 4F MS-SPRing networks？（）A、 Each fiber has half of its capacity reserved for protection.B、 Two fibers carry their full capacities while the other two fibers are reserved for protection.C、 The signal is sent simultaneously in both directions around the ring. The receiver determines which fiber to listen to based on signal quality.D、 The signal is sent simultaneously in both directions around the ring. The transmitter determines which fiber has the working bit set for the receiver to acknowledge.
考题
单选题When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?（）A
cold fuel oilB
low fuel oil pressureC
low atomizing steam pressureD
water in the fuel oil
考题
单选题White smoke exhausting from a diesel engine can be caused by （）A
low combustion temperatureB
a leaking fuel nozzle check valveC
late fuel injectionD
plugged oil-scraper ring hole
考题
单选题When centrifuging heavy fuel oil, an important factor to consider is the （） (1) flow rate (2) viscosity of the fuel oilA
(1) only is correctB
(2) only is correctC
both (1) and (2) are correctD
neither (1) or (2) are correct
考题
单选题Which of the listed conditions can cause a diesel engine to use too much lube oil?（）A
Dirty lube oil filterB
Too much piston ring wearC
High lube oil viscosityD
Low lube oil temperature
考题
单选题A ship which is required to carry an Oil Record Book must log in the book（）.A
discharge of ballast or cleaning water from fuel tanksB
sounding levels of all fuel tanks on a daily basisC
the grade and specific gravity of all fuel oil carriedD
fuel consumption rates on a weekly basis
考题
单选题Which of the following is a factor of fuel oil almost having nothing to do with the formation of combustion products?（）A
setting pointB
ashC
sulfur contentD
carbon residues
考题
单选题Which of the following operations need to be entered on the Oil Record Book Part I?（） (1) Cleaning of fuel oil tanks (2) Internal transfer of fuel oilA
（1）onlyB
（2）onlyC
both（1）and（2）D
neither（1）nor（2）
考题
单选题Which of the followings will affect the spray of fuel oil?（）A
coke depositsB
cylinder water temperatureC
asphalt in fuel oilD
lub oil
考题
单选题Which of the following machinery space operations is required to be logged in the Oil Record Book?（）A
Ballasting or cleaning of fuel oil tanksB
Shifting suction of main fuel pump to reserve fuel oil tankC
Changing out sprayer plates to adjust for steam demandD
Daily inspection of engine room bilges
考题
单选题The size of the discharge ring used for the efficient operation of a disk type purifier is dependent upon the（）A
rated capacity of that purifierB
viscosity of the oil being purifiedC
maximum design speed of that purifierD
specific gravity of the oil being purified
考题
单选题A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）A
GasolineB
WaterC
Lubricating oilD
sulphur compounds
考题
单选题Which of the following conditions could be a cause of excessive fuel dilution of diesel engine lube oil?（）A
Leaking fuel injectorsB
Lower than normal compressionC
Delayed fuel injectionD
All of the above are correct
考题
单选题When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（） Ⅰ.filtering Ⅱ.settlingA
Ⅰ onlyB
Ⅱ onlyC
either Ⅰ or ⅡD
neither Ⅰ or Ⅱ
考题
单选题If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should（）A
remove the discharge ringB
re-prime the purifierC
the centrifuge to its proper speedD
install an additional discharge ring
考题
单选题Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）A
Carbon particlesB
Lube oilC
GasolineD
Diesel fuel
考题
单选题After the ship is out of the harbour and in “Full Speed”, well change （）.A
to fuel oil instead of diesel oilB
for fuel oil instead of diesel oilC
to diesel oil into fuel oilD
for diesel oil into fuel oil
考题
单选题Which of the following problems may occur when using fuel oil with a high sulphur content?（）A
Injection lagB
Lube oil dilutionC
Pre-ignitionD
Corrosion
考题
单选题The temperature of the fuel oil received during bunkering operations is critical in determining the（）A
expansion space to leave in a tankB
flash point at which the fuel will burnC
temperature to which the fuel must be heatedD
rate at which the fuel can be pumped during transfer operations
考题
单选题When the incinerator is stopped, which of the following is wrong?（）A
After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutesB
Close auxiliary burner firstly and then close main burnerC
After stopping fuel, restoring the position of main fuel supply valveD
Stop blower as soon as stopping supplying fuel oil
考题
单选题Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）A
ImpuritiesB
Lube oilC
GasolineD
Diesel fuel
考题
单选题Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.A
expandB
extractC
increaseD
decrease
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