A、the engine stops
B、the engine is running
C、you repair the engine
D、overhauling the engine
更多“The crankcase cover should never be allowed to open for investigation when （）”相关的问题
A、A.the splashing of lubrication oil by the crankshaft B、B.the dilution of crankcase oil with particles of combustion C、C.broken fuel lines spraying oil on the crankcase D、D.the ignition of unburned fuel and air in the crankcase
A、Open the crankcase immediately to check for damage B、Apply fire fighting water through the crankcase breather C、Allow the engine to cool before opening the crankcase D、Assume that there is no damage to the crankshaft
A、removes combustible gases in the crankcase B、prevents the formation of combustible gases in the crankcase C、cools lubricating oil D、improves cold weather starting
A、A.inspection covers should not be opened until the engine has cooled B、B.ventilation system should be continued in operation for one hour for cooling C、C.scavenge pump should be immediately secured to prevent loss of lube oil D、D.explosion covers should be opened slightly to provide extra ventilation
A、a shortage of refrigerant in the system B、air in the system C、an accumulation of liquid refrigerant in the crankcase D、a shortage of oil in the crankcase
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