轮机英语题库601-800.pptVIP

轮机英语考试强化复习（3000KW及以上船舶二管轮/三管轮） 轮机工程学院辅机教研室 *0785 When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will_____. A. pick up more of any increase in load B. pick up less of any increase in load C. share an equal amount of any increase in load D. drop an equal amount of any decrease in load *0786 To prevent vibration damage to the fuel supply line of a diesel engine, you may use _____. A. a short length of heavy duty clear plastic tubing B. a length of approved flexible nonmetallic hose C. welded flange connections for all joints D. aluminum piping with expansion loops *0787 Motor vessels usually have independent lube oil systems for main engine and reduction gears because_____. A. coolers are not needed for the gear system B. contaminants produced by the engine could harm the reduction gears C. non-additive oils axe used in the main engine system D. different type centrifuges are required for the main engine and reduction gear lube systems 0788 Clearance volume余隙容积 scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished_____. A. during the valve overlap period B. with only the exhaust valve open C. at a pressure below atmospheric D. without cooling the cylinders or pistons 0789 Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of_____. A. fuel oil vapor at the sludge tank vent B. unburned fuel vapors in the scavenge air receiver C. lube oil vapors in the crank case D. lube oil vapors in the engine room 0744 Cylinder wall temperature, fuel oil supplier, and oil passage_____. A. are interdependent相互依赖的 B. are not interdependent C. have nothing to do with each other D. are independent独立自主 0745 Suppose the rated capacity of the main engine