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单选题
When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be（）
A
disengaging the clutch firstly, then stopping the main engine
B
stopping the main engine firstly, then disengaging the clutch
C
stopping the cooling water pump firstly, then stopping the main engine
D
stopping the main engine and disengaging the clutch at the same time
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更多 “单选题When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be（）A disengaging the clutch firstly, then stopping the main engineB stopping the main engine firstly, then disengaging the clutchC stopping the cooling water pump firstly, then stopping the main engineD stopping the main engine and disengaging the clutch at the same time” 相关考题
考题
On a ship, the locker or space containing the self-contained breathing apparatus must _____.A.be located in close proximity to the main control stationB.be equipped with battery powered emergency lightingC.be marked SELF-CONTAINED BREATHING APPARATUSD.All of the above
考题
When a ship were found its equipment does not correspond substantially with the particulars of the Certificate by a nominated surveyor and corrective actions unable to be taken, thenA.the Certificate would be withdrawnB.the ship owner would be finedC.the shipping company must be notified immediatelyD.the ship must proceed to the nearest appropriate repair yard for a repair without delay
考题
When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be______.A.disengaging the clutch firstly, then stopping the main engineB.stopping the main engine firstly, then disengaging the clutchC.stopping the cooling water pump firstly, then stopping the main engineD.stopping the main engine and disengaging the clutch at the same time
考题
材料：Spark erosion is caused by a voltage discharge between the main bearing and journal surface. The cause of the potential is the development of a galvanic element between the ship’s hull, sea water, and the propeller shaft/crankshaft.The oil film acts as a dielectric. The puncture voltage in the bearing depends on the thickness of the oil film. With increasing engine ratings, the specific load in the main bearing is increased. his will reduce the oil film thickness, and enable the discharge to take place at a lower voltage level.Since the hydrodynamic oil film thickness varies through a rotation cycle, the discharge will take place at roughly the same instant during each rotation cycle, i.e. when the film thickness is at its minimum. The roughening will accordingly be concentrated in certain areas on the journal surface. In the early stages, the roughened areas can resemble pitting erosion. but later, as the roughness increases, the small craters will scrape off and pick up white metal-hence the silvery white appearance.Therefore, to ensure protection against spark erosion, the potential level must be kept at maximum 80 mV, which is feasible today with a high efficiency earthing device. If an earthing device is installed, its effectiveness must be checked regularly. Spark erosion is only observed in main bearings and main bearing journals.问题：According to the paragraph one, a voltage between the main bearing and journal surface is produced by______.A.propeller rotationB.leakage from M/E electric control unitC.a galvanic elementD.friction between the main bearing and journal surface______engine ratings increase, the hydrodynamic oil film between the main bearing and journal surface is______.A.The lower/thinnerB.The higher/the thickerC.The lower/thickerD.The higher/thinnerWhen will the spark erosion take place on the journal surface during each rotation cycle?A.when the film thickness is at its minimumB.when the film thickness is at its maximumC.when the engine is on its compression strokeD.when the engine is on its exhaust strokeDuring the engine room watch keeping, which equipment must be noted to ensure protection against spark erosion?A.the antifouling plantB.the earthing deviceC.the main engine electric heating coilsD.the shaft generator请帮忙给出每个问题的正确答案和分析，谢谢！
考题
Every ship should hoist ______ when approaching and entering ports.A.its flashing lightB.the ship’s nameC.its identificationD.its signal letters
考题
单选题If your vessel is equipped with a radiotelephone，what must also be aboard?（）A
Certificate of InspectionB
List of ship stationsC
Copy of ship to shore channelsD
Radio station license
考题
单选题If keep the fuel injection of main engine unchanged when ship is fouled, that will causeⅠ.The speed of main engine to be reduced Ⅱ.Ship speed to be reduced Ⅲ.The resistance torque of propeller to be increased Ⅳ.Trim at stern to increase（）A
Ⅰ + ⅡB
Ⅰ ~ ⅢC
Ⅰ ~ ⅣD
Ⅰ + Ⅱ + Ⅳ
考题
单选题Among the main propulsion units on board the ship with the same capacity, the lightest one is（）.A
steam engineB
steam turbineC
gas turbineD
diesel engine
考题
单选题我船配有自动舱盖。（）A
Our ship is equipped with automatic hatch covers.B
Our ship is equipped with folding-type hatch covers.C
Our ship is equipped with side-rolling hatch covers.D
Our ship is equipped with rolling-type hatch covers.
考题
单选题When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine （）A
to work as overload characteristicB
overspeedC
over mechanical load onlyD
over thermal load only
考题
单选题When the ship security alert system is activated, it shall not（）A
initiate a ship-to-shore security alertB
transmit a ship-to-shore security alertC
initiate an alert identifying the ship, its locationD
raise a security alarm on-board the ship indicating that the ship is under threat
考题
单选题Suppose the rated capacity of the main engine of a ship is 10,000 KW at 100 rated rpm, then when at 80 rpm its capacity should be （）.A
800 KWB
5120 KWC
6400 KWD
4180 KW
考题
单选题Our ship（）with many modern navigational instruments.A
equippedB
is equippedC
equipsD
has equipped
考题
单选题Changes in direction or speed of the main propulsion units shall be recorded, （）an Administration has determined that the size or characteristics of a particular ship make such recording impracticable.A
in addition toB
in addition thatC
except forD
except where
考题
单选题What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?（）A
WhiteB
BlackC
BlueD
Clear
考题
单选题When a ship is fully loaded, it needs to prevent the main engine to be（）.While a ship is fully empty, it needs to prevent the main engine to be（）.A
overspeed；overloadB
overload；overspeedC
over mechanical load；over thermal loadD
over torque；overspeed
考题
单选题When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）A
starting air pressureB
scavenge air pressureC
over-speed tripD
banjo oiler line
考题
单选题When the general alarm is sounded continuously, the engine room personnel should （）.A
proceed to their man overboard stationsB
start the fire pumpC
put on lifejackets and go to their abandon ship stationsD
secure the propulsion diesel engines and evacuate the engine room
考题
单选题The load limitation of governor should be reduced when ship navigating at sea, the main reason is to（）A
prevent the diesel engine surgingB
prevent governor from being damaged because of swingC
reduce the probability of the crank shaft being torsional vibrated and resonatedD
prevent the main engine being overload or overspeed
考题
单选题The ship will be responsible for the cargo loaded or unloaded（）.A
only when the cargo is within its railB
during the time when loading or ynloading is going onC
after the cargo is checked by tallymenD
as soon as loading or discharging begins
考题
单选题In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?（）A
Bed plateB
ColumnC
EntablatureD
Tie rod
考题
单选题When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship（）A
equalB
largerC
smallerD
equivalent
考题
单选题Chain suspension ladders on a ship must be replaced by fixed ladders if the required chain suspension ladder（）.A
has been sent in for repairB
cannot be supported against a vertical flat surfaceC
does not extend to the water when the ship lists 15 degreesD
is not equipped with vertical guard rails on either side
考题
单选题All of the followings are the detainable deficiencies under the SOLAS Convention expert（）.A
Failure of proper operation of propulsion and other essential machinery, as well as electrical installationB
Failure of the proper operation of the main and auxiliary steering gearC
Failure of engineering watch arrangements to confirm to the requirements specified for the ship by AdministrationD
Failure of the proper operation of emergency generator, lighting, batteries and switches
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A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to （）A
early fuel injectionB
excessive bearing play within the running gearC
overloading of the cylinderD
all of the above
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