engine（）

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• STCW78/95 Convention describes that （） are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room.

  A . available minimum requirements B . available maximum requirements C . mandatory minimum requirements D . mandatory maximum requirement

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• The exhaust gases for a new engine should be （） when the engine operates under full load.

  A . smoky B . a little bit dense C . visible D . almost invisible

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• The officer in charge of the engineering watch shall notify the chief engineer without delay （）.

  A . in any emergency or if in any doubt as to what decision or measures to take B . in the event of any impending action in machinery spaces that may cause reduction in ship’s speed C . when isolating and bypassing machinery to be worked on D . co-operating with any engineer in charge of maintenance work

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• Engine coolant accumulating in the diesel engine lubricating oil can result from a （）

  A . low oil pressure B . high coolant pressure C . leaking fuel injector D . cracked cylinder head or liner

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• A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine（）

  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 stroke

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• Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.

  A . open the bypass line B . cut in the lube oil cooler C . pressurize the lube oil system D . top off the expansion tank

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• An over-speed trip stops a diesel engine when the engine （）

  A . runs out of fuel B . has low lubricating oil pressure C . exceeds a set maximum speed D . has high cooling water temperature

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• 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 pressure B . scavenge air pressure C . over-speed trip D . banjo oiler line

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• Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）

  A . camshaft beatings B . main bearings C . piston crowns D . cylinder wall

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• Since the burning or combustion takes place within the engine itself, the engine is known as （）.

  A . a fire -tube boiler B . an internal combustion engine C . an external combustion engine D . an internal combustion generator

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• Friction, engine wear and oil consumption in a diesel engine are directly related to the （）.

  A . acidity of the oil B . pour point of the oil C . flash point of the oil D . viscosity of the oil

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• Diesel engines are considered safer than gasoline engines because（）.

  A . they are more heavily built B . the fuel used is less volatile C . they can be easily reversed D . they operate at a lower speed

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• Immediately after any diesel engine is started, the engineer should check the （）

  A . crankcase pressure B . lube oil pressure C . saltwater pressure D . exhaust temperature

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• The device used to limit engine torque at various engine speeds is called a （）

  A . speed limiting governor B . variable speed governor C . constant speed governor D . load limiting governor

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• After the engine is warned, we should（） the turning gear before starting up the engine.

  A . take in B . put in C . take out D . put u

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• If a crankcase explosion occurs in a diesel engine, you should stop the engine and（）

  A . immediately open all crankcase relief ports B . increase crankcase exhauster speed to draw cool air into the engine C . allow the engine to cool naturally D . increase crank case scavenge air to remove unburned gase

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• Critical speed in diesel engines occurs when engine torque pulsations become （）

  A . opposed to the crankshaft rocking couple B . resonant with the crankshaft natural frequency C . critical fore and aft crankshaft vibrations D . horizontal whipping motions of the crankshaft

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• Before starting an engine by air, the engine must（）

  A . be turned by a turning gear for at least one minute B . be turned by a turning gear for at least two minutes C . be turned at least one complete turn D . be turned at least two complete tur

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• With UMS, when the engine room is unwatched （） will control the main engine.

  A . the bridge officer on watch B . the chief engineer C . the duty engineer D . the duty motorma

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• A restricted air intake to a diesel engine may result in the engine （）.

  A . failing to reach rated speed B . knocking under maximum load C . hunting or surging under light load D . overspeeding and running away

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• A diesel engine is similar to a gasoline engine except that the former has no （）.

  A . cross-head B . cylinder C . connecting rod D . spark plug

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• Diesel engine mufflers or silencers reduce the engine exhaust noise by （）

  A . passing the exhaust through long head pipes B . diffusing exhaust vibrations through activated carbon baffles C . increasing the exhaust gas velocity D . reducing the exhaust gas velocity

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• Several years after his retirement, the engineer's company ______.

  A．bought a very advanced machine B．had a very expensive machine out of order C．placed an order for a very expensive machine D．had difficulty destroying a very expensive machine

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• Software engineering economy is an effective part of software engineering，which ofthe following contents is the research content of software engineering economy( )．

  ①estimation of software development cost ③earn & cost analysis of software development ③adjustment of software development progress A．①only B．②and③ C．①and② D．all

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• Software Engineering Economy is an effective part of software engineering, which of the following content is the research comtent of software engineering economy？

  Ⅰ.Estimation of software development cost Ⅱ.Earn & Cost analysis of software development Ⅲ.Adjustment of software development progress A．Ⅲ only B．Ⅱ and Ⅲ C．Ⅰ and Ⅱ D．all

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