（） is the removal of exhaust gases by blowing in fresh air.

[单选题]Scavenging is （） of exhaust gases by blowing in fresh air.A . the suctionB . the compressionC . the removalD . the deliver

[单选题]E．xhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine byA．natural aspirationB．masked intake valvesC．air ceilsD．scavenging air

[单选题]The process to remove exhaust gases by blowing in fresh air is called （）.A . chargingB . superchargingC . startingD . scavenging

[单选题]The exhaust gases for a new engine should be （） when the engine operates under full load.A . smokyB . a little bit denseC . visibleD . almost invisible

[单选题]The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.A . contaminating waterB . contaminated additivesC . contaminated fuelD . contaminating impuritie

[名词解释] 英译中：Furniture removal carriers

[单选题]The rising of the exhaust temperature in manifold pipe may NOT result from （）.A . too great a loadingB . fouled turbochargerC . bad combustionD . excessive air

[名词解释] 群分出截面 group removal cross section

[单选题]B．y comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine The device most commonly used is aA．tachometerB．pyrometerC．dynamometerD．calorimeter

[单选题]E．xhaust gas pyrometers are useful forA．detecting faulty combustion in individual cylindersB．adjusting fuel racks to maintain equal loading between cylindersC．adjusting the load limit setting of the governor at idle conditionsD．calculating engine hor