轮机部三管轮考试模拟题1(轮机英语)

The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the _____.

The steady state difference between the control point and the value of the controlled variable, corresponding with the set point, is known as __________.

The purging of air from an elector-hydraulic steering gear unit is necessary when .

Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?

The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?

During repair, lubrication lines and orifices must be _____.

Which of the following about ISM Code is not right? .

In an electro-hydraulic steering system, under movement is maintained in close synchronization with the steering wheel position by means of the _____.

In ______the control action is independent on the output.

The load limitation of governor should be reduced when ship navigating at sea, the main reason is to .

____ is not installed on the emergency switchboard.

Among the rings of a piston the _____ one is subjected to the greatest load and temperature.

In the first 24 hours after abandoning a vessel, water should be given only to personnel who are_____.

Keep compartment ______ as the gas given off can be dangerous.

Engines, which are to be run in parallel have governors specially adapted for the same __ , about 4% to obtain basic load sharing.

Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartridgesThe bold and italic word “which” means _____.

Cold weather starting of a diesel engine is more difficult than warm weather starting due to_____.

Grind the ______.

The process of scavenging a two-stroke/cycle diesel engine serves to____________.

The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of _____ of different thickness.

The in the steering gear move the rudder to the required angel.

When checking the liquid level in a tank, you should position yourself _____.

In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the ______________.

When the dock is refilled with water after docking repair, the first work which should be done by engineers is ____.

A faulty injection in one cylinder of an operating diesel engine can be located by ____.

All of the followings are orders between the bridge and the engine room except ______.

An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to _____

Defective timing gear in a diesel engine may lead to .

After the engine is warned, we should_____ the turning gear before starting up the engine.

In the _____ pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.

____does not belong to the mooring trial item.

Main diesel engine control can be obtained by the bridge .

The unloading system on an air compressor will _____.

Which of the statements listed concerning heat transfer is correct?

The efficient burning of fuel in a diesel engine is dependent upon the ______.

Short cycling of a refrigeration compressor refers to _____.

“In times of heavy weather, it is extremely dangerous if manning is very short.” This sentence means ______.

Exhaust gas pyrometers are useful for_______.

The effective temperature of air is dependent upon_______.Ⅰ.relative humidity Ⅱair velocity

A diesel engine cylinder head can crack as a result of __________________.

All classes of fires can be safely combated using .

Fuses placed in series with a thermal trip-type circuit breaker are used for _____.

If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should___________.

The outside diameter of the pipe is _____ the diameter of the bore of the piston rod, the result being that an annular space formed between the piston rod and the pipe.

The____ is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.

The needle valve in the injector _____ at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.

If two A.Cgenerators are to be operated in parallel, the load is distributed evenly by .

Sparking at the brushes of a running motor could be an indication of _____.

Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the _____.

When deciding the composition of the engineering watch, which may include appropriately qualified ratings, following criteria shall be taken into accountⅠ.the type of shipⅡ.the type and condition of the machineryⅢthe safety of life, ship, cargo and portⅣ.the observance of international, national and local regulations.

When off loading garbage to another ship, your records must identify that ship by name and _____.

The IOPP certificate is valid for ___.

Broken intake valve springs on one cylinder of a diesel engine can cause the engine to ________.

The bilge main is arranged to drain any watertight compartment _____ ballast, oil or water tanks and to discharge the contents overboard.

The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs, is to _____.

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.

The color of the exhaust from a diesel engine should be _____.

The order “ ” means “Maximum maneuvering engine revolution for ahead propulsion.”

During oil transfer operations, who would be responsible to guarantee that the posted transfer procedures are being followed?

This used piston had been tested and approved as a spare part by the _____ during last annual repair.

In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be _____.

To ensure the quality of dock repair, C/E should know very well ____.

Under rotary pumps are the gear, _____, cam-and-piston and screw types.

Which of the following types of motors is often designed for use in correcting power factor?

The purpose of the refrigeration system low pressure cutout switch is to ______.

Badly leaking refrigeration compressor discharge valves will cause

Following a grounding, you can best determine that a SLACK fuel oil tank has been holed by _____.

The main objective of the SOLAS Convention is to specify _____ for the construction, equipment and operation of ships, compatible their safety.

Which of the following operations aboard a tanker must be recorded in the Oil Record Book _____.

Which of the following can be obtained by means of an indicator card?

The four-stroke cycle begins with the piston .

Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.

Self-excited a.cgenerator with "error operated" voltage control systems draw the full excitation power for the machine terminalsThis dispenses with the current transformers, reactors and capacitors necessary for accurate compounding, but renders the excitation system vulnerable to variations in its output voltageWhich of the following is correct about the generator mentioned according to the sentences above _____.

Black smoke exhausting from an operating diesel engine can be caused by ________.

In today’s practice, with cylinders of equal diameter of bore and equal revolutions, the two-cycle engine delivers a power about 80 percent ____ than that of the four-stroke one.

The scavenge port inspection should be carried out_____, to obtain the most reliable result with regard to the effectiveness and sufficiency of the cylinder lubrication and the combustion cycle (complete or incomplete).

The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as _____.

The air compressor pumps air to the ______.

The order "Bow thrust stop" means “_____”.

When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine .

If the engine is naturally aspirated, or is a small high-speed type with a centrifugal turbocharger, the period of valve overlap, i.ewhen both valves are , will be and the exhaust valve will close some 10° top dead canter.

Incomplete combustion in a running diesel engine can cause piston rings to become stuck as a result of _____________.

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated .

If a diesel engine fails to start，one of the likely causes is ________.

What is commonly used to create turbulence in a diesel engine combustion system?

Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an _____.

____ is (are) not power supplied by main switchboard directly.

The second engineer seemed to know what the sign ______.

Generally the symbol (GB786.1-93) of overflow valve is ___

In the refrigeration system, a shortage of refrigerant is indicated by _____.

A hydraulic motor may be driven by _____.

If the low level alarm of the diesel fuel day tank fails to function, you can expect trouble from____________.

If a refrigeration compressor is running continuously without lowering temperature as normal in the refrigerator, the trouble may be _____.

On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the _____.

A signal derived from a controlled function and returned to the initiating point is called a/an _____.

____ is not installed on the emergency switchboard.

If the piston ring gap remains insufficient when installing new rings, you should＿.

In describing basic diesel engine operation，the term ‘event’ refers to ________.

When using a fuel with a higher than normal sulfur content in an auxiliary diesel engine, you should_________.

The steam coils in a high pressure evaporator used for saltwater service should be de-scaled with _____.

A dazzling white burner flame in the boiler furnace indicates _____.

A variable pitch propeller is made _____ a boss with separate blades mounted into it.

Crankshafts of medium speed engines are _____ from a single piece of steel.

A vessel sailing through the specific special areas may discharge or dispose of _____.

The pressure difference of the gauge on the oily water separator increases greatly, the reason is____.

Which of the conditions listed may occur in an operating diesel engine if air pockets form. within the cylinder head circulating water passages? .

The sequence of fuel injection into cylinders is determined by _____.

Which of the following is not a recommended safe practice?

In order to strengthen maritime security and prevent and suppress acts of terrorism against shipping, a new, comprehensive security regime for international shipping was set to enter into force in July 2004The new regime is .

The function of synchronous compensating machine is to .

Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?

Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of _____.

Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is________.

Which of the listed statements is correct concerning the starting of centrifugal pumps? .

Sediment collects in a tubular purifier _____.

The injector pump is operated by a cam which drives the _____ up and down.

I would have gone ashore with the second engineer, if I ______ time.

The usual symptoms of cavitation in a centrifugal pump is _____.

Class C fires are best extinguished by _____.

The ______pump is usually used as the lubricating oil pump.

About the jacket water, that of the auxiliary engines usually is circulated by pumps, and the main engine usually .

After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the _____.

A diesel engine is operating at 1800 RPM and driving a propeller at 600 RPMWhat is the speed reduction ratio?

A well-lubricated bearing surface always appears__________.

Engine _____ refers to the relative time of position of crank, at which each operation during the cycle is commenced and is completed.

A process of comparing the actual performance of a machine with the intended performance, and the adjusting the machine to reduce and eventually eliminate the difference between the actual and intended performance is called .

Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?

During extremely cold weather, while starting an engine, it turns too slowly and fails to startThis problem is most likely the result of .

Before starting an air compressor, It should be _____.

It is possible to mount a double suction centrifugal pump impeller with the vanes facing in the wrong directionThis would cause the pump _____.

Diesel engine blow-by is the leakage of combustion gases past the _______.

When the relief valve opens it discharges high pressure refrigerant vapor to the _____.

A compound gauge is typically installed on the _____.

I am sorry ______ waiting for a long time.

The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?

Under ISPS Code the ship to which it applies has to carry____.

A centrifugal pump can’t supply water after startingYou should check ____.

Because of the reduced _____ in the distillation system, some of the sea water boils as it flows through the tubes of the evaporator.

_____ provides the head or pressure to supply the domestic water where required.

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to _____.

The marine diesel engine is a type of diesel engine used on shipsThe _____ of its operation is not very difficult to understand.

The ship emergency plan item should not include ____Ilifesaving, fire fighting, leakage blocking, abandon ship IIfirst aid IIIintegration emergency

During the watch keeping at sea, the engineer in charge should notify in the event of any serious occurrence or a situation where he is unsure of the action to take.

For proper operation, auxiliary boiler feed water must have which of the following characteristics?

The annual repair of this year will _____ at the end of this monthPlease get everything ready.

The ____pump is usually used as the emergency bilge pump.

Metal particles accumulated from the wearing of components in a diesel engine can result from lube oil that has been contaminated with_________.

The following engine parts are found damaged and we are about to ______ compensation from the shipyard.

To repair a small electrical motor that has been submerged in saltwater, you should _____.

As for a diesel engine, lack of combustion air may be due to _____.

In an automatic mooring winches, the wire is paid off the barrel at a tension and is recovered at tension.

For optimum results, centrifugal purification of heavy fuel oil should be accomplished with the fuel at the lowest practicable________.

The development of _____ has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.

Fuel oil is regularly transferred to the day tank in order to _______.

Which types of portable extinguisher should you watch for the reflash of the fire?

As the plunger moves up, the ports are closed and the fuel _____ and delivered to the injector nozzle at very high pressure.

Prior to lighting off a cold automatically fired auxiliary boiler, yon should _____.

The fuel from the bunker tanks must be treated by before entering the service tanks, from where the fuel enters .

_____, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

Which of the following can be obtained by means of an indicator card?