轮机英语综合(33-48期)

中华人民共和国海事局

2004年第1期海船船员适任证书全国统考试题(总第33期)

科目：轮机英语 试卷代号：803

适用对象：无限、近洋航区3000KW及以上船舶大管轮

（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）

答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔

涂黑。第1题至68题，每题1分，第69题至76题，每题1.5分,第77题至78题, 每题10分。

一、单项选择题：

1． The exhaust valve is opened at about the same time ______the air inlet ports are opened.

A. before B. after C. when D. until

2． Cylinder wall temperature, fuel oil sulphur, and oil passage ______.

A. are interdependent B. are not interdependent C. have nothing to do with each other D. are independent

3． Acid solution ______ in the system can be tested from time to time by putting some on to a piece

of lime.

A. strength B. dense C. percentage D. velocity

4． Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means

of stopping the machinery from ______.

A. within the space concerned B. outside the space concerned C. the throttle station D. within the fire room

5． Cylinder oil is a high viscosity mineral oil, with a ______machined to the anticipated sulfur

content of the fuel.

A. TAN B. TBN C. SAN D. SBN

6． The tendency for lubricating oil to thin out at high temperatures and thicken at low temperatures

will be characterized by a ______.

A. low viscosity index B. high viscosity index

C. high neutralization number D. low demulsibility quality

7． When considering the lowest fuel system operating temperature, ______ are important.

A. specific gravity or relative density

B. open flash point and closed flash point values C. higher calorific and lower calorific values D. cloud point and pour point values

8． In ______the incoming air is directed upwards, pushing the exhaust gases before it and then the

exhaust gases travel down.

A. loop scavenging B. cross scavenging C. uniflow scavenging D. supercharging 9． ______ is usually driven by the engine camshaft and supplies pilot air to the cylinder air start

valve.

A. An air receiver B. An operating valve C. An automatic valve D. An air distributor 10．Which of the following conditions can cause above normal air temperature to develop in the

intake manifold of a four-stroke/cycle, turbo-charged, diesel engine?

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A. Clogged air intake filters. B. Piston blow-by.

C. A defective after-cooler. D. Faulty exhaust valves.

11．Misalignment of an engine crankshaft can be detected by measuring______of crank webs for

each unit of the engine.

A. diameters B. lengths C. deflections D. none of the above

12．A crankshaft whose center of gravity coincides with its center line is said to be ______.

A. dynamically balanced B. statically balanced C. counter balanced D. resonantly balanced 13．In a diesel engine, the main bearings are used between the ______.

A. connecting rod and the crankshaft B. wrist pin and the connecting rod C. camshaft and the engine block D. crankshaft and the engine block 14．We should not start the engine unless the turning gear is ______.

A. on B. disengaged C. bolted D. unscrewed

15．When the exhaust ports or valves are opened, the ______begin to exhaust.

A. carbon and water B. refrigeration steam C. burnt gases D. oil sludge

16．We'd better take _____to save fuel consumption, you know it would be useless to get there earlier.

A. nominal speed B. economical speed C. rated speed D. slow speed 17．Shaft sealing in a centrifugal pump can be effected by ______.

A. the mechanical seal B. packed stuffing boxes C. either A or B D. neither A nor B

18．Most pump manufacturers recommend that the suction piping dimension for centrifugal pumps be

______.

A. one size smaller than the pump suction nozzle B. the same size as the pump suction nozzle C. one size larger than the pump suction nozzle D. installed with a short radius elbow at the pump

19．The water level in a steaming auxiliary boiler will always ______.

A. rise when the steam pressure is increased

B. remain constant as long as the feed pump operates C. fall when the steam pressure is decreased D. vary as the steam demand changes

20．The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a

result of ______.

A. seawater contamination B. frequent surface blows C. dissolved oxygen deaeration D. frequent bottom blows 21．Sediment collects in a tubular purifier______.

A. on top cover B. on sides of bowl C. in drain line on the discs D. on the discs 22．The operating water is supplied under the ______of an oil separator.

A. sliding bowl bottom B. bowl hood C. bowl D. filter units

23．The bilge main is arranged to drain any watertight compartment ______ballast, oil or water tanks

and to discharge the contents overboard.

A. rather than B. other than C. in addition that D. except for 24．The oil sludge is burnt in the ______onboard. I?ll show you the ashes.

A. boiler B. main engine C. auxiliary engine D. incinerator

25．When making entries in the Oil Record Book, the date, operational code, and item number shall

be inserted in the appropriate columns. Furthermore, the required particulars shall be ______.

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A. recorded only for accidental oil discharges

B. recorded only for operations involving discharge of oily waste C. signed by the oiler who enters them in the Oil Record Book D. recorded chronologically in the blank space

26．Which bearing will carry the load on two small points diametrically opposite to each other?

A. Needle B. Tapered roller C. Roller D. Ball 27．In a general cargo crane, ______ is fitted to raise or lower the jib.

A. the slewing motor B. the luffing motor C. the hoisting motor D. none of the above 28．In an electro-hydraulic steering gear system, when will the variable displacement pump be placed

on stroke?

A. When the helm is at any angle other than amidships. B. When the six-way valve is opened. C. When the ram relief valves lift.

D. When the rudder angle is different from the position of the helm.

29．With reference to rules governing steering gear, which one of the following rules is incorrect ?

A. It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliary.

B. The auxiliary gear could be power operated in passenger ships.

C. The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speed.

D. All moving parts of the steering gear must be guarded against any possible damage. 30．A refrigeration system contaminated with moisture can be affected by ______.

A. acid formation B. sludge formation C. ice in the expansion valve D. all of the above 31．A dirty intercooler on the ship service air compressor will result in ______.

A. decreased compression ratio B. higher than normal power consumption C. un-loader malfunction D. water in the lubricating oil

32．Which of the problems listed would cause the discharge temperature of an R-22 refrigeration

compressor to increase?

A. Thermal expansion valve frozen open. B. Suction gas heat exchanger bypassed. C. Condenser clogged or fouled. D. High pressure cutout switch inoperative. 33．Zinc rods are installed in the refrigeration system ______.

A. liquid strainer B. liquid receiver C. saltwater condenser D. evaporator

34．The fire pumps must be capable of delivering a total quantity of water at a defined head , not less

than______ of the total bilge pumping capacity.

A. one-third B. two-thirds C. one-fourth D. two-fourths

35．Which of the following factors will have the greatest effect on the heating load within a

conditioned space?

A. Solar gain B. Infiltration and ventilation air

C. Occupants inside the space D. Entertainment equipment within the space

36．On commonly used ships, if two A.C. generators are operated in parallel, the load is distributed

evenly by ______.

A. varying the D.C. exciter voltage B. varying the reluctance of the air gap

C. regulating the speed of prime mover D. shorting out part of the armature windings

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37．Which of the listed sections of an emergency switchboard is used to supply power for alarm

signals under emergency conditions?

A. The generator and bus transfer section B. The 450 volt, 60 cycle, 3 phase bus C. The 120 volt, 3 phase, 60 cycle bus D. The 24 volt DC bus

38．Which of the following should be the FIRST step in removing a generator from parallel operation?

A. Trip the generator off the switchboard. B. Turn off all electrical equipment.

C. Remove the load from the 'off going' generator.

D. Increase the cycles of the generator staying on the line.

39．Which of the listed devices is used to measure pressure and convert it to an electrical signal?

A. Transducer B. Reducer C. Transformer D. Rectifier

40．An indicator on the main switchboard should show ______the emergency battery is in service or

not.

A. which B. when C. weather D. whether 41．The number of cycles per second occurring in AC voltage is known as the ______.

A. phase angle B. frequency C. wave form D. half mode

42．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which

of the following actions should you take? A. Make an entry in the official logbook.

B. Open the master control valves on the fixed CO2 system. C. Start the fire pump and check discharge pressure. D. Secure auxiliary condenser overboard discharge.

43．The additional mark ______ in the Classification Certificate for Machinery represents that

personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.

A. BRC B. MCC C. AUT-0 D. AUT-1

44．If the atomizer holes are enlarged beyond the maker's recommended size , the atomizer must be

______.

A. repaired B. replaced C. replenished D. repeated

45．In a diesel engine, an extremely leaking exhaust valve can cause ______.

A. misfiring B. pre-ignition C. interrupted scavenging D. reduced scavenging

46．One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply

to that cylinder is secured. Which of the following problems may be the cause? A. Low loading of the cylinder. B. Excessive cooling of that piston.

C. Sluggish ring action on the piston. D. A mechanical defect in a working part. 47．Poor combustion in a diesel engine can be caused by ______.

A. high compression pressure B. low intake air temperature C. low exhaust pressure D. high scavenge air temperature

48．Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ______.

A. reduce engine horsepower output B. aid in silencing the exhaust noise

C. increase the mean effective pressure D. contribute to effective cylinder scavenging 49．Hearing a strong noise, ______at once.

A. the engine stopped B. the engine was stopped C. he stopped the engine D. he had stopped the engine

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50．Fix the fuel injector into______after repair.

A. the cylinder liner B. the cylinder cover C. the cylinder jacket D. the piston 51．Lower suction pressure of a pump may be caused by ______.

A. too much air in the pipe line B. closed inlet valve C. empty tank D. leaky pipe

52．Diesel engine exhaust temperatures may be used to indicate ______.

A. leaking exhaust valves B. an overloaded cylinder C. a clogged injector nozzle D. all of the above.

53．The indications of a scavenge fire are excessive black smoke, ______ and peeling from scavenge

trunking.

A. turbo-chargers surge B. spark seen from the drains C. paint blistering D. all above are right 54．It is well known that the whole power distribution of the ship?s electrical services mainly depend

on the______.

A. sub-boards B. main switchboards C. emergency switchboards D. distribution boards 55．Combustion knock can occur in the cylinders of a diesel engine under any condition permitting

______.

A. a shortened ignition delay period B. a lean fuel/air mixture

C. excess fuel in the combustion chamber D. rapid vaporization of injected fuel droplets

56．Oil mist detectors are usually used on board to detect oil mist density within ______.

A. the engine crankcase B. the engine scavenge boxes C. drain tanks D. fuel tanks

57．Before doing maintenance on electrical equipment, you should ______.

A. turn off power first B. turn on power first C. with a test pen in hand D. tell C/E 58．When start a screw pump, the by pass valve should be ______.

A. closed B. opened fully C. cracked open D. partly open

59．Our company has built a new ship in Hamburg and I am going to fly there to______.

A. hand it over B. take it over C. carry it over D. carry it out 60．Routine monitoring of a diesel engine should include ______.

A. checking for leaks B. checking temperatures and pressures C. listening for abnormal noises D. all of the above.

61．Which of the precautions listed should be observed when taking on diesel fuel?

A. Secure all lighting to the main deck.

B. Provide a portable fan to blow away fumes. C. Prohibit smoking in the area.

D. Display a black triangle during daylight hours.

62．The conventions under which the port state control inspection is carried out include all the

following except______.

A. SOLAS 74 B. MARPOL 73/78 C. STCW 78/95 D. ISM Code 63．A portable foam fire extinguisher is placed in operation by ______.

A. turning it upside down B. pressing the foam lever C. squeezing the grip handle D. opening the hose valve

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64．In cleaning up an oil spill, the use of chemical agents would ______.

A. absorb the oil for easy removal B. remove the oil from the water C. disperse or dissolve the oil in the water D. not affect the oil

65．While on watch in the engine room, you hear a continuous sounding of the general alarm. Which

of the following actions should you take? A. Make an entry in the official logbook.

B. Open the master control valves on the fixed CO 2 system. C. Start the fire pump and check discharge pressure. D. Secure auxiliary condenser overboard discharge.

66．One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is

______.

A. the ? snow ? which is sometimes discharged along with the gas is toxic B. prolonged exposure to high concentrations of CO 2 gas causes suffocation C. rapid dissipation of the CO 2 vapor

D. the CO 2 gas is lighter than air and a large amount is required to extinguish a fire near the deck 67．The company should establish procedures to ensure that the ship is maintained______ the

provisions of the relevant rules and regulations.

A. out of accordance with B. in relation to C. in conformity with D. in connection with 68．The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than ______

by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage ______before their watch.

A. 0.08%/ 4 hours B. 0.08%/ 2 hours C. 0.04%/ 4 hours D. 0.04%/ 2 hours

二、关联题（每组关联题题干下有4个小题，每小题4个选项） 第一组：

Because the exhaust gas driven turbo-blower cannot provide enough air at low engine speeds, the pressurized air should be cooled to increase the charge air density. As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engine. So a water separator should be mounted beneath the bottom part of the engine inlet manifold.

Lubricating oil from the compressor will pass along the air lines and deposit on them, in the event of a cylinder air starting valve leaking, hot gases would pass into the air pipes and ignite the lubricating oil. If starting air were supplied to the engine, this would further feed the fire and could lead to an explosion in the pipelines. In order to prevent such an occurrence, cylinder-starting valves should be properly maintained and the pipelines regularly drained. Also oil discharged from compressors should be kept to a minimum, by careful maintenance. 69. A water separator is used in order to ______.

A. keep the air from being carried into the engine B. keep the moisture from being condensed

C. keep the danger from being carried into the engine D. take away the condensate from the air 70. Why should we use a charge air cooler?

A. In order to increase the charge air temperature. B. In order to increase the charge air pressure.

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C. In order to reduce moisture condensed. D. In order to increase the charge air density.

71. Which of the following may cause an explosion according to the passage?

A. Starting air cannot be supplied into the engine.

B. Air starting valve leaks and starting air is supplied into the engine. C. Cylinder-starting valves are properly maintained.

D. Oil discharged from compressors is kept to a minimum.

72. In order to avoid igniting the lubricating oil and leading to an explosion in the pipelines, ______.

A. pipelines should be regularly drained

B. cylinder-starting valves should be properly maintained

C. oil discharged from compressors should be kept to a minimum D. A+B+C

第二组：Maintenance and Overhauling

Satisfactory and proper operation of the engine depends not only on correct manoeuvring but also on how well it is kept in order. Regular maintenance of the engine helps a lot in preventing early wear of parts and in ensuring a long service as well as the working efficiency of the engine. With various types of engines, of course, the maintenance and overhaul is different. Instruction books are to be referred to whenever necessary.

The individual parts of the engine should be inspected and thoroughly cleaned at regular intervals. The periods for such overhaul work depend largely on the quality of the lubricating oil and fuel, on the load and on the efficiency of the operator in locating troubles and remedying them in time..

During overhaul the safety rules have to be observed as required in order to prevent the danger of accidents. Special precaution is necessary when the engine is running with the lagging removed. During overhauls with the engine shut down, safety measures should be taken to avoid undesirable turning of the crankshaft. All pipes should be pressure-relieved before the repair work is started. Read the pressure gauges and /or check the pipes by carefully loosening the screw plugs or connections.

If some parts of the running gear are dismantled, before using the turning gear, make sure that no loose parts are jammed in the crankcase where it is easy for them to cause damage. 73. According to the passage, which the following factors are involved to keep the engine

satisfactory and proper running?

A. correct manoeuvring B. keep the engine in order C. refer to the instruction books D. all of above

74. According to the passage, which the following items do influence the periods of the overhauling

work?

A. the quality of the lubricating oil B. the load of the engine

C. the efficiency of the operator in locating troubles and remedying them in time D. all of the above

75. According to the passage, we should take special precaution when ____.

A. the engine is running with the removal of lagging B. the engine is shut down

C. pipes are removed D. the screw plugs or connections are lossened 76. According to the passage, line 17 the bold and italic word “it” may propabably mean ____ .

A. running gear B. turning gear C. crankcase D. to cause damage

中国海事服务中心

中华人民共和国海事局

2003年第3期海船船员适任证书全国统考试题(总第32期)

科目：轮机英语 试卷代号：803

适用对象：无限、近洋航区3000KW及以上船舶大管轮

（本试卷卷面总分100分，及格分为70分，考试时间为100分钟）

答题说明：请选择一个最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔

涂黑。第1题至68题，每题1分，第69题至76题，每题1.5分,第77题至78题, 每题10分。

一、单项选择题：

69．The rate of pressure rise during the period following fuel ignition process in a diesel engine, is

influenced chiefly by the_______. A. percent of CO 2

B. range of inflammability C. theoretical fuel/air ratio

D. length of the ignition delay period

70．Which of the following would cause a diesel to have black smoke?

A. leaky injector. B. water in the gas. C. too heavy oil. D. water in the oil. 71．Before dismantling the pipe, would you _____the oil retained in the hose with _____?

A. flash/fresh air B. wash/fresh water C. flush/compressed air D. rush/diesel oil

72．Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means

of stopping the machinery from _______.

A. within the space concerned B. outside the space concerned C. the throttle station D. within the fire room

73．Cylinder oil is a high viscosity mineral oil, with a _____machined to the anticipated sulfur

content of the fuel.

A. TAN B. TBN C. SAN D. SBN

74．In a normally operating diesel engine, the main cause of lubricating oil contamination in the

crankcase is a result of the ______. A. metal particles loosened by wear B. air when no air cleaners are used C. condensation of water vapors

D. breakdown of the lubricating oil by dilution

75．The main engine is cooled with fresh water _____ is added suitable small quantities of chemicals

to prevent corrosion.

A. in which B. on which C. to which D. by which 76．As for a diesel engine,lack of combustion air may be due to______.

A. fouling turbine B. fuel pump faults C. lubrication failure D. excessive cooling 77．_____, remedies must be taken to stop it as early as possible.

A. Any surge occurs B. Any surge occurred

C. Should any surge occur D. Should any surge occurring

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78．To prevent the build up of high stresses engine must not be run continuously ______.

A. faster than dead slow speed B. slower than dead slow speed C. with the output of MCR D. at critical speeds 79．The turbo-blower comprises a gas turbine and a ______.

A. condenser B. blower C. soot blower D. air receiver

80．The thrust block or thrust bearing, located at the ______ of the engine, may be integral with, or

separated from, the bed-plate.

A. fore end B. aft end C. ahead D. astern end

81．The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with

scavenge ports in the sides of the cylinder being ______. A. shut B. closing C. opened D. closed

82．The pressure of pilot air is usually______ than that of starting air.

A. higher B. lower C. low D. high

83．When a centrifuge is arranged to separate impurities and small amount of water from oil, it is

known as a _______.

A. purifier B. separator C. filter D. clarifier

84．The control system for a controllable pitch propeller can be programmed______.

I. to produce a maximum combined propeller and engine efficiency between itch and a given engine speed

II. for continuous operation of the engine at pre-set condition A. I only is correct B. II only is correct

C. both I and II are correct D. neither I or II are correct

85．The amount of fluid delivered by a helical pump can be regulated by ______.

A. throttling the pressure line B. changing the speed of the rotor C. either A or B

D. None of the above is true.

86．One of the consequences in continuing to operate a centrifugal bilge pump with the discharge

valve closed, is that the______.

A. motor overload will open B. relief valve will open C. pump will overheat D. motor will overheat

87．When steam is being raised on a boiler, the water level will normally ______.

A. drop as the boiler warms up B. rise as the boiler warms up

C. remain unchanged until the boiler is hot enough D. rise and fall with the steam demand

88．Which of the following conditions could cause the feed pump for an auxiliary boiler to lose

suction?

A. Increased suction head pressure. B. Decreased feedwater temperature.

C. Pump recirculating line being open too much. D. Excessive feedwater temperature.

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89．The______ of the gravity disc is too big. It cause oil to flow through the water outlet. We

changed the disc and no oil is found in the water outlet.

A. gravity B. diameter C. circumference D. cylinder

90．The diameter of the gravity disc is too big. It causes oil to flow through the water outlet. We

changed the disc and no ___ is found in the water outlet. A. water B. oil C. scale D. ridge

91．The fine filters will be arranged _______one can be cleaned while the other is operating.

A. in order to B. because of C. so that D. so as to

92．The term 'discharge', as it applies to the pollution regulations, means_______.

A. spilling B. leaking C. dumping D. All of the above 93．A class ?C' fire would most likely occur in the______.

A. engine room bilges B. main switchboard C. paint locker D. rag bin

94．Which of the following statements describes the functions of a reservoir used in a hydraulic

system?

A. Dissipate heat B. Trap foreign matter C. Separate air from the oil D. All of the above 95．______are used for cargo handling.

A. Cranes B. Mooring winches C. Windlasses D. Foreman

96．In the cargo winch, spur reduction gearing transfers the motor drive to______.

A. the toping light B. the board brake C. the fail-safe D. the barrel shaft

97．The main steering gear must be able to steer the ship at maximum ahead service speed and be

capable at this speed, and at the ship?s deepest service draught, of putting the rudder from 35 degrees on one side to 30 degrees on the other side within no _____. A. more than 28 seconds B. more than 60 seconds C. less than 28 seconds D. less than 60 seconds

98．Freon 12 which is used to produce intense cold is normally a______ when at atmospheric

pressure and temperature.

A. liquid B. gas C. solid D. water only 99．Which of the statements listed concerning heat transfer is correct?

A. Heat is always transferred at a constant rate.

B. Heat transfer rate increases as temperature difference increases. C. The rate of heat transfer is not affected by temperature difference. D. The high temperature region is known as a heat sink. 100． The cooler as the liquid becomes, ______.

A. the faster it will evaporate B. the slower it will condense C. the slower it will evaporate D. the faster it will flow

101． In a refrigeration system, if the cooling water to the condenser fails, the______.

A. box temperature solenoid valve will close B. expansion valve will close C. compressor will shutdown D. king valve will open

102． A feeler or thermal bulb is used for the expansion valve to______.

A. detect the temperature B. detect the pressure

C. heat the refrigerant D. accelerate the refrigerant

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