【正文】 n B. abrasion磨損 C. corrosion D. all of the above *0666 Wear in parts of exhaust valve operation gear will tend to_____ the tappet clearance. A. increase B. reduce C. rise D. reduction Jimei University 0667 We39。 (2) expansion。s speed B. the engine39。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。s_____. A. inlet valves B. exhaust valves C. emergency valves安全閥 D. runreturn valves 0609 The term_____ refers to one plete sequence of operations required to produce power in an engine. A. diesel engine B. stroke C. cycle D. pression ratio Jimei University 0610 The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of_____ rpm. A. below 300 B. above 1200 C. between 300 to 1200 D. below 1200 0611 The thrust block_____ the thrust from the propeller to the hull of the ship. A. conducts B. fits C. transfers D. carries Jimei University *0612 The thrust block or thrust bearing, located at the_____ of the engine, may be integral with, or separated from, the bedplate. A. fore end B. aft end C. ahead D. astern end 0613 The thrust loading is carried by pads. In some designs the pads extend_____ of the distance around the collar. A. one quarter B. a half C. three quarters D. four fifths Jimei University 0614 The timing for each starting valve must be set so that it opens when the piston is_____. A. just past the TDC B. stopping C. close to BDC D. on the way upwards *0615 The timing of the injection can be altered by raising or lowering the pump_____ in relation to the cam. A. needle valve B. cylinder C. piston D. plunger Jimei University 0616 The transmission system is made up of shafts, bearings, and finally the_____. A. thrust shaft B. propeller C. reduction gear box D. train transmission 0617 The turboblower prises a gas turbine and a_____. A. condenser B. blower C. soot blower D. air receiver Jimei University *0618 The two halves of connecting rod large end bearing are held together by_____. A. bridges B. tap bolts螺基 , (帶頭 )螺栓 C. jack bolts定位 [起升 , 調(diào)整 ]螺栓 D. shims Jimei University *0619 The twostroke cycle begins with the piston_____, with the air inlet ports or scavenge ports in the sides of the cylinder being opened. A. ing down from the B. D. C B. ing up from the B. D. C C. ing down from the T. D. C D. ing up from the T. D. C Jimei University 0620 The twostroke cycle begins with the piston ing up from the bottom of its stroke, with _____ in the sides of the cylinder being opened. A. scavenge ports B. inlet valves C. air starting valves D. exhaust valves 0621 The twostroke cycle begins with the piston ing 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 Jimei University 0622 The twostroke cycle begins with the piston_____, with the air inlet ports or scavenge ports in the sides of the cylinder being opened. A. ing down from the B. D. C B. ing up from the B. D. C C. ing down from the T. D. C D. ing up from the T. D. C Jimei University 0623 The upper end of the cylinder liner forms a_____ of sufficient strength to support it. A. rectangle B. bore C. flange D. coupling Jimei University 0624 The use of a poor quality piston cooling oil can lead to rapid deterioration of its properties with the resultant formation of deposits in the piston crown which in turn results in a considerable_____ in heat transfer. A. advantage B. superior C. increase D. reduction Jimei University 0625 The vessel is out of harbor and in Full Ahead .