【正文】 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 University 0714 With twostroke engines, it takes four revolutions to make_____ power stroke(s). A. 1 B. 2 C. 4 D. 8 0715 With uniflow scavenging the ining air enters_____ and leaves at the top. A. at the bottom of the cylinder B. at the lower end of the cylinder C. at the middle of the cylinder D. in the scavenging box Jimei University 0716 With Variable Injection Timing the start of injection may be_____ as the engine load is reduced. A. advanced B. retarded C. kept constant D. none of the above *0717 With V1T the start of injection may be_____ as the engine load is reduced within a certain range. A. advanced B. retarded C. relayed D. cut off 負(fù)荷減小 ， 定時提前以維持最大爆發(fā)壓力 Jimei University 0718 With VIT unit the timing of fuel injection of an engine can be regulated automatically according to the_____. A. ship draft B. pitch C. engine load D. oil viscosity *0719 Worn out ring grooves should be_____ to standard dimension after being welded. A. machined B. bored C. honed 油石 磨 D. drilled Jimei University 0720 You increased the_____ to 150 tons that39。s bustion but also the engine39。s rudder B. the ship39。 (4) suction. The correct sequence is_____. A. (4)(2)(3)(1) B. (4)(3)(1)(2) C. (4)(3)(2)(1) D. (4)(1)(2)(3) Jimei University 0634 There is_____ in any water cooling system for a diesel engine allowing for expansion and water makeup in the system as well as air vent and chemicals addition. A. a setting tank沉淀箱 [池 ] B. a service tank C. a head tank D. an expansion joint膨脹節(jié) , 補償器 Jimei University 0635 There is___ in any water cooling system for a diesel engine allowing for expansion and water makeup in the system as well as air vent and chemicals addition. A. an expansion joint B. a service tank C. a head tank D. a setting tank 0636 There is a_____ system lubricating the running gear and cooling the piston and sometimes lubricating the cylinders. A. recirculating B. total loss C. cooling D. refrigeration Jimei University 0637 There is an injection pump for each cylinder, which is usually operated once every cycle by_____ on the camshaft. A. a gear B. a cam C. a rod D. a roller 0638 There may be steam coils in a cylinder c