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輪機(jī)英語題庫601--文庫吧資料

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【正文】 ooling water system. _____ during operation of the engine. A. Steam should be cut off B. Steam should pass through the coils C. Electric should supplied to the coils D. The coils should be dismantled Jimei University *0639 There should be a lubricating oil_____ between the main beatings and the crankshaft. A. film B. cap C. lacquer漆 D. shell 0640 These piston rings are so badly worn that they must be_____. A. renewed B. welded C. machined D. chromiumplated Jimei University 0641 They understand the_____ of automatic sludge discharging of the purifier. But they are not good in practice. A. principle B. principal C. cause D. case *0642 This used piston had been tested and approved as a spare part by the_____ during last annual repair. A. agent B. shipchandler C. surveyor D. engineer Jimei University *0643 Those generally used additives for cooling water are either anticorrosion oils or inanic無機(jī) _____. A. gases B. paints C. inhibitors緩蝕劑 D. detergent 0644 To avoid scavenge fires_____ the engine timing and equipment maintenance should be correctly carried out. A. occurred B. occurring C. not happening D. occur Jimei University 0645 To avoid scavenge fires occurring the engine timing and equipment maintenance_____. A. should be correctly carried out B. should correctly be taken place C. should carded with care D. must to carry out with great care Jimei University *0646 To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of_____ and detergency. A. salinity鹽度 B. alkalinity ]堿度 C. acid D. sanitary衛(wèi)生的 , Jimei University *0647 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 ( Maximum Continuous Ratings ) D. at critical speeds Jimei University *0648 To start the ejection process the oil feed to the centrifuge is first shut off and the oil remaining in the bowl removed by admitting_____. A. flashing water B. operating oil C. flushing water驅(qū)油水 D. sealing water水封水 Jimei University 0649 Turbocharging of marine diesel engine is achieved by two distinct methods, _____ termed the constant pressure and the pulse system. A. respectable B. respectful C. respective D. respectively 0650 Turbocharging system may be designed to operate on either the_____ or the constant pressure exhaust system. A. pulse B. exhaust C. fluctuating D. hunting Jimei University 0651 Twostroke engine turbocharging is achieved by two distinct methods, _____ termed the constant pressure and the pulse system. A. respectable B. respectful C. respective D. respectively *0652 Twostroke engines invariably have_____ to admit air when uncovered by the descending piston. A. inlet ports B. outlet ports C. inlet valves D. exhaust valves Jimei University 0653 Under maneuvering condition the main engine may run on_____. A. gas oil B. (marine diesel oil) C. residue oil D. crude oil原油 *0654 Uniflow is the most efficient scavenging system but requires_____ an opposed piston arrangement_____ an exhaust valve in the cylinder head. A. neither/nor B. both/and C. either/or D. not only/but also Jimei University 0655 . means_____. A. variable injection timing B. variable inlet tonnage C. vertical ining tonnage D. vertical inlet tank 0656 Valve gear knocks are more easily located while the engine_____. A. is running B. stops C. is repaired D. lacks of oil Jimei University 0657 Valve overlap is the period during which_____. A. the inlet valve is open B. the exhaust valve is open C. both valves are closed D. both valves are open 0658 Veetype engines have the connecting rods from two cylinders connected to each_____ of the crankshaft. A. throw B. web C. main bearing D. deflection Jimei University *0659 Vents are led from the engine to_____ for the release of air from the cooling water. A. the cooling jackets B. the head tank C. the cooling water pump D. the scavenging box Jimei University 0660 Vents are led from the engine to head tank_____ from the cooling water. A. for the release of air B. for the release of water C. in order to the release of air D. because the release of air Jimei University 0661 Vents are led from the engine to the head tank for the release of_____ from the cooling water. A. air B. heat C. sludge D. steam 0662 We call a ship equipped with a diesel engine as main engine_____. A. a tug boat拖船 B. a salvage ship 打撈船 C. an oil tanker D. a motor vessel內(nèi)燃機(jī)船 Jimei University *0663 We can control the speed of the engine by_____ the quantity of oil supplied. A. exchanging B. regulating調(diào)節(jié) ( 油量和速度 ) C. adjusting 校準(zhǔn) , 調(diào)整 ( 表 ) D. differing from 0664 We should not start the engine unless the turning gear is_____. A. on B. disengaged C. bolted D. unscrewed Jimei University *0665 Wear in a cylinder liner is usually due to_____. A. frictio
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