In an engine with air inlet valve and exhaust valve on its cylinder heads the fresh air will enter into the cylinder （） and the gases exhaust （）, there being an adequate overlap between the inlet opening and the exhaust closing.

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  A . noise coming from that air starting valve B . continuous operation of the starting air compressor C . zero air pressure in the air starting system D . overheated starting air pipe to the cylinder head

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• An indication of a diesel engine air intake being partially clogged, is （）.

  A . low firing pressure and low exhaust temperatures B . low firing pressure and normal exhaust temperatures C . high firing pressure and low exhaust temperatures D . high firing pressure and high exhaust temperature

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• Your vessel is equipped with a fixed CO2 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）

  A . Use the CO system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the CO system D . Evacuate the engine room and use the fire main system

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• An engineer, together with some motormen （）to help in the repair work.

  A . send B . sends C . was sent D . were sent

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• Your vessel is equipped with a fixed C02 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）.

  A . Use the C0 system and evacuate the engine room B . Use the fire main system and evacuate the engine room C . Evacuate the engine room and use the C0 system D . Evacuate the engine room and use the fire main system

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• When using a fuel with a higher than normal sulfur content in an auxiliary diesel engine, you should（）

  A . maintain higher than normal jacket water temperature B . change the lube oil more frequently than normal C . maintain a higher air-box temperature than normal D . maintain a higher air-box pressure than normal

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• In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the （）.

  A . crosshead B . crankpin C . crank journal D . gudgeon pi

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• When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）

  A . suction stroke B . compression stroke C . power stroke D . exhaust stroke

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• A spring-loaded centrifugal flyweight governor responds to reduced engine load with an immediate increase in （）

  A . pilot valve oil pressure B . speeder spring force C . compensation needle valve clearance D . centrifugal force on the flyweight

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• （） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.

  A . Because B . Owing to C . For D . No matter

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• In heavy marine engine the practice is to drive the engine on（）which has previously been stored in starting air reservoirs.

  A . electric motor B . hydraulic motor C . compressed air D . turning gear

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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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• Which of the following may cause that an engine doesnt run on starting air?（）

  A . too low starting air pressure B . main start valve closed C . neither A nor B D . A and B

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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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• In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a （） in the crankshaft to the bottom end bearing andthen up a connection rod to the gudgeon pin.

  A . telescopic pipes B . large bore C . drilled passage D . tied rod

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• Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.

  A . completely closing the compartment B . closing the compartment except for the ventilators C . leaving the compartment open to the air D . increasing the air flow to the compartment by blower

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• Defective air cooler in a diesel engine will lead to （）.

  A . smoky exhaust B . starting failure C . overload D . over speed

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• The engine is started with （） supplied from air receivers.

  A . pressure oil B . pressure water C . compressed air D . cooling water

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• With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to （） of the engine.

  A . increase the exhaust temperature B . increase the power of C . reduce the speed D . increase the fuel consumptio

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• Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）

  A . Faulty turbocharger turbine diffuser ring B . Faulty turbocharger compressor ring C . Insufficient cooling water flow D . Clogged air intake filter

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• Which of the following may cause that an engine doesnt turn on starting air?（）

  A . too low starting air pressure B . main starting valve closed C . neither A nor B D . A and B

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• Charging is the filling of the engine cylinder with a supply or charge of fresh air （） compression.

  A . to need B . ready for C . want to D . going to be

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• It can be inferred from the passage that most people in the United States in 1955 viewed the national economy with an air of _________.

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• Engineering students are supposed to be examples of practicality and rationality, but when it comes to my college education I am an idealist and a fool. In high school I wanted to be an electrical engineer and, of Course, any sensible student with my aims would have chosen a college with a large engineering department, famous reputation and lots of good labs and research equipment. But that's not what I did.

  I chose to study engineering at a small liberal-arts university that doesn't even offer a major in electrical engineering. Obviously, this was not a practical choice; I came here for more noble reasons. I wanted a broad education that would provide me with flexibility and a value system to guide me in my career. I wanted to open my eyes and expand my vision by interacting with people who weren't studying science or engineering. My parents, teachers and other adults praised me for such a sensible choice. They told me I was wise and mature beyond my 18 years, and I believed them. I headed off to college, feeling sure I was going to have an advantage over those students who went to big engineering "factories" where they didn't care if you had values or were flexible. I was going to be a complete engineer: technical genius and sensitive humanist all in one. Now I'm not so sure. Somewhere along the way my noble ideals crashed into reality, as all noble ideals eventually do. After three years of struggling to balance math, physics and engineering courses with liberal arts courses, I have learned there are reasons why few engineering students try to reconcile engineering with liberal-arts courses in college. The reality that has blocked my path to become the typical successful student is that engineering and the liberal arts simply don't mix as easily as I assumed in high school. Individually they shape a person in very different ways; together they threaten to confuse. The struggle to reconcile the two fields of study is difficult. The author chose to study engineering at a small liberal-arts university because he ______. A．intended to be a sensible student with noble ideals B．wanted to be an example of practicality and rationality C．intended to be a combination of engineer and humanist D．wanted to coordinate engineering with liberal-arts courses in college 此题为多项选择题。

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