【正文】 tance 0630 The withdrawing of the cylinder liners, in general, depends on their_____. This may amount to approximately 1/120 of the diameter in some engines. A. correct maneuvering B. wear C. working efficiency D. maintenance Jimei University 0631 The words such as quantity, grade, viscosity and specific gravity should be in the_____. A. repair list B. spare parts order list C. price list D. bunker list *0632 The work fuel 做功的燃油量 does in each working cycle can be obtained by taking the_____. A. precautions B. rpm C. indicator cards D. B and C Jimei University 0633 The working cycle of a fourstroke diesel engine consists of four events: (1) pression。輪機工程學(xué)院輔機教研室 輪機英語考試強化復(fù)習(xí) （ 3000KW及以上船舶二管輪 /三管輪 ） Jimei University 0601 The space between cylinder liner and jacket is called_____. A. the circulating tank B. the scavenge box C. the cooling water space D. the cooler 0602 The space between cylinder liner and jacket is called_____. A. the cooling water B. the circulating water C. the cooler D. the cooling water space Jimei University 0603 The starting air in the receiver is supplied by the_____. A. air pressor B. refrigeration pressor C. vacuum pump D. purifier 0604 The starting air system usually has_____ to prevent starting if anything is not in order. A. drain cocks B. vent valves C. counteracts 中和 , 阻礙 D. interlocks Jimei University 0605 The starting air system usually has_____ to prevent starting if anything is not in order. A. stop valves B. interlocks C. nonreturn valves D. air vents *0606 The starting of a marine diesel engine is generally carried out with the assistance of_____. A. pressed air B. electricity C. hydraulic oil D. pressing air Jimei University *0607 The successful operation of any engine or machine and_____ depend on effective lubrication. A. their no trouble period B. their freely trouble period C. its free trouble life D. its troublefree life Jimei University 0608 The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine39。 (2) expansion。s rudder B. the ship39。t run on starting air? A. too low starting air pressure B. main start valve closed C. neither A nor B D. A and B Jimei University 0701 Which of the following may lead to the engine NOT to start on air? A. starting air pressure too high B. correct timing of starting air valves C. three of the six starting valves stuck D. the turning gear disengaged Jimei University 0702 Which of the following may take place if the clearance of the main bearings are excessive? A. bearing knocks B. dropping of pressure of L. O. C. noises D. all the above Jimei University *0703 Which of the following will be the function of lubricating oil used in marine engines? A. to remove heat from oil cooled pistons B. to wash away wear detritus（ 磨屑 ） C. to neutralize acidic products D. all of the above Jimei University 0704 Which of the following will take place if the clearance of the main bearings are excessive? A. bearing knocks B. dropping of pressure of L. O. C. noises D. all the above Jimei University *0705 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 *0706 While engine is in operation the piston moves up and down, thus causing the rotation of the_____. A. crankcase B. slipper滑塊 C. cam housing D. crankshaft Jimei University 0707 Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from_____. A. exhaust valves B. starting valves C. fuel valves D. the indicator cocks *0708 With_____ unit the timing of fuel injection of an engine can be regulated automatically. A. . B. MEP . D. VIT MEP： Mean Effective Pressure, 平均有效壓力 VIT：可變噴油定時 WHR：廢熱回收裝置 Jimei University 0709 With_____ unit the timing of fuel injection of an engine can be regulated automatically. A. MBT B. MEG C. VSG D. VIT MBT： Maximum Brake Torque 最大制動力矩 VSG： variable speed gear 0710 With fourstroke engines, it takes four revolutions of the crank shaft to make_____ power stroke(s). A. 1 B. 2 C. 4 D. 8 Jimei University 0711 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 consumption Jimei University *0712 With the crank in position in the engine, some measurements can be taken by a special bridge gauge and_____. A. a micrometer B. a bowl C. a feeler gauge D. a wrench *0713 With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing_____. A. has a nip B. is large enough C. is zero D. are suitable Jimei Unive