A、an insufficient speed droop setting
B、an overloaded engine
C、clogged drain holes in the oil control rings
D、complete combustion
更多“Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）”相关的问题
A、has much to do with the operation of the engine and its life B、have much to do with the operation of the engine and its life C、has much doing with the operation of the engine and its life D、have much doing with the operation of the engine and its life
A、a two-stroke engine works without exhaust operation B、a two-stroke engine works without compression stroke C、a two-stroke engine works without expansion stroke D、a two-stroke engine works without suction operation
A、engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air briefly B、in the operation of engine trails, the main engine should be running in low-speed C、As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same time D、the order “engine trials” should be given by the bridge
A、operated manually once an hour B、operated until the engine has started C、placed into operation only at maximum load D、adjustable to meet lubrication requirements
A、indicates the amount of abrasive material in the fuel B、affects the starting ability of a cold engine C、determines the amount of fuel penetration engine D、affects the compression ratio of an operating engine
A、smoother engine operation B、advanced fuel ignition C、increased fuel economy D、reduced engine power
A、has little or no internal friction B、has a lower effective compression ratio C、operates with scavenge air under a positive pressure D、operates without energy absorbing intake and exhaust strokes
A、provide energy to operate the engine between power impulses B、neutralize the primary inertia force of the crankshaft C、reduce the shock of starting loads on the main bearings D、prevent the engine from operating at critical speed
A、A.starting the engine hot B、B.knurling the piston skirt C、C.operating an overheated engine D、D.using scuff resistant piston rings
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