网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
Which of the following problems is the main source of fuel pump and injection system malfunctions?（）
A
Improper lubrication
B
Air in the fuel system
C
Coated fuel lines
D
Excessive vibration
参考答案
参考解析
解析：
暂无解析
更多 “单选题Which of the following problems is the main source of fuel pump and injection system malfunctions?（）A Improper lubricationB Air in the fuel systemC Coated fuel linesD Excessive vibration” 相关考题
考题
Which of the following problems is the main source of fuel pump and injection system malfunctions?A.Improper lubricationB.Air in the fuel systemC.Coated fuel linesD.Excessive vibration
考题
Which of the following components provides a direct source of seawater for the fire main system?A.Rose boxB.Sea chestC.Sluice(闸式) valveD.Fire pump stuffing box
考题
One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?A.Low loading of the cylinderB.Excessive cooling of that pistonC.Sluggish ring action on the pistonD.A mechanical defect in a working part
考题
Which of the following is the correct signal flow for an analog multi-room audio system？（）A、Source，Volume Control，Speaker，AmpB、Source，Amp，Volume Control，SpeakerC、Amp，Source，Volume Control，SpeakerD、Speaker，Amp，Volume Control，Source
考题
Which three of the following options are NOT fields found in an Ethernet frame?（）A、VersionB、TypeC、Source PortD、FlagsE、Data
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While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?（）A
Manually trip the over-speed deviceB
Interrupt the fuel flow to the engineC
Disengage the safety interlockD
Slide the camshaft to the neutral position
考题
单选题Which of the following components provides a direct source of seawater for the fire main system?（）A
Rose boxB
Sea chest or spool pieceC
Sluice valveD
Fire pump stuffing box
考题
单选题If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?（）A
Increase the cooling water flow to the engineB
Secure or reduce fuel to that cylinderC
Screw down on the pressure adjusting spring to decrease to decrease popping pressureD
Readjust the injection timing
考题
单选题When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）A
Quantity of fuel injected tends to be decreasedB
Quantity of fuel injected will always be increasedC
Start of injection tends to be advancedD
Duration of injection will always greater
考题
单选题Which of the following is a valid source for Windows operating system updates？（）A
SNAB
RISC
RASD
WSUS
考题
单选题While taking on fuel, you notice oil on the water around the vesselWhich of the following actions should be taken FIRST?（）A
Stop fuelingB
Notify the dispatcherC
Notify the terminal superintendentD
Determine if your vessel is the source
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 main source of fuel injection system malfunctions is （）A
improper adjustmentsB
contaminated fuelC
coated fuel linesD
excessive vibration
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During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?（）A
Flywheel inertiaB
Admission of starting airC
The way of the vesselD
securing of fuel to the cylinders
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The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）A
auto-ignition pointB
flash pointC
burning temperatureD
fire point
考题
单选题Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）A
The amount of fuel injected will be increasedB
The start of injection will be retardedC
The nozzle will permit fuel to dribbleD
The spray pattern will be distorted
考题
单选题Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）A
Defective temperature controls in the systemB
Cavitation in the cooling water pumpC
Opened vent in the cooling systemD
Restricted water passages in the engine
考题
单选题Which of the following problems will occur if the needle valve in a fuel injection nozzle sticks in the open position?（）A
Fuel injection timing will changeB
Nozzle operation will be unaffectedC
Fuel will leak into the drain lineD
Fuel will not be delivered
考题
单选题While sailing under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is （）A
power of main engineB
turbine rotation speedC
speed of main engineD
exhaust temperature
考题
单选题When a fuel injection nozzle overheats, which of the problems listed can be expected?（）A
The fuel metering will varyB
The fuel will explodeC
The cylinder head will crackD
The engine will stop
考题
单选题When a ship is entering to narrow waterway and the fuel feeding of the main engine is keeping unchanged, which of the following is the wrong conclusion?（）A
the power of main engine will be reducedB
exhaust temperature will be increasedC
the speed of the ship will be reducedD
the propulsion characteristic of propeller will keep unchanged
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 following statements describes the results of excessive microbiological growths within a fuel system?（）A
all excessive amounts of growth will cause the main engines of the vessel to stall due to the inability to supply the proper quantities of fuel to satisfy the existing loadB
The deposits produced by these growths form blockages and flow restrictions ultimately leading to improper atomization of the fuel into the cylindersC
Eventually the growth of these organisms will deplete the supply of food available to them, which in turn will cause their demiseD
If continual growth is permitted, a sweet odor similar to that associated with baking will be noticed when system components are opened for inspection
热门标签
最新试卷