A、should be scraped
B、should be derusted
C、should be drilled out
D、to be brushed off
更多“The carbon deposits on the piston crown and in the ring grooves （）.”相关的问题
A、carbon deposits on the compressor suction valves B、the evaporator temperature to increase C、rapid corrosion of the thermal expansion valve D、no operating problems
A、overheated compressor bearings B、excess lube oil viscosity C、carbon deposits on the compressor piston rings D、wax crystals forming in the lubricant
A、loss of additives from the lube oil B、carbon deposits in the lube oil C、excessive centrifuging D、excessive fuel dilution
A、The oil oxidizes and forms carbon deposits B、The viscosity increases C、Engine oil consumption decreases D、Lubricating qualities of the oil are enhanced
A、decrease the velocity of gases flowing past the tubes B、increase the rate of heat transfer C、reduce accumulations carbon deposits D、direct the flow of gases
A、compressor damage from improper lubrication B、refrigerant absorption by the lubricant C、increased viscosity in the lubricant D、carbon deposit on the compressor suction valves
A、Low viscosity index B、Low carbon forming tendencies C、High film strength D、High non-corrosive qualities
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