Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes() as prime mover.
A、gas turbine
B、diesel engine
C、steam engine
D、gasoline engine
A、gas turbine
B、diesel engine
C、steam engine
D、gasoline engine
A、A.the splashing of lubrication oil by the crankshaft B、B.the dilution of crankcase oil with particles of combustion C、C.broken fuel lines spraying oil on the crankcase D、D.the ignition of unburned fuel and air in the crankcase
A、the power of main engine will be reduced B、exhaust temperature will be increased C、the speed of the ship will be reduced D、the propulsion characteristic of propeller will keep unchanged
A、Failure of proper operation of propulsion and other essential machinery, as well as electrical installation B、Failure of the proper operation of the main and auxiliary steering gear C、Failure of engineering watch arrangements to confirm to the requirements specified for the ship by Administration D、Failure of the proper operation of emergency generator, lighting, batteries and switches
A、Blank off the exhaust gas inlet to the damaged turbocharger B、Secure cooling and lubrication to the damaged turbocharger C、Lock the rotor of the damaged turbocharger D、All of the above
A、Flywheel inertia B、Admission of starting air C、The way of the vessel D、securing of fuel to the cylinders
A、A.top of the ring groove B、B.back of the ring groove C、C.bottom of the ring groove D、D.piston ring end clearance
A、Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliable B、The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower C、When forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operation D、Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
A、quantity of air it takes in and retains in the cylinders during a given time period B、proportion of trapped air that is utilized in the combustion process C、thermodynamic efficiency of the engine cycle D、all of the above
A、failure of proper operation of propulsion B、paint peeling off the uptake C、no operation procedures for the oil separators D、damaged sanitary pump