A、open late and close early
B、open late and close late
C、fail to open when the engine is cold
D、fail to open at normal operating temperature
更多“If the valve tappets in a diesel engine are set at greater clearances than those specified by the engine manufacturer, those valves will （）”相关的问题
A、later and closing earlier B、later and closing later C、earlier and closing earlier D、earlier and closing later
A、the inlet valve B、the outlet valve C、both the inlet valve and the outlet valve D、the pump inlet valve
A、Worn intake valve guides B、Pitted pre-combustion chambers C、Loose valve tappets D、High exhaust back pressure
A、add refrigerant to the system B、adjust the thermal expansion valve to the proper setting C、adjust the float valve to the proper holding pressure D、open the hand expansion valve
A、box temperature solenoid valve will close B、expansion valve will close C、compressor will shutdown D、king valve will open
A、A.the relief valve should open before the high-pressure cutout B、B.the relief valve should open and let excess refrigerant go to receiver C、C.the high-pressure cutout switch should operate before the relief valve opens D、D.close in on the suction valve
A、that the fuel valve is open B、if the air supply system is open C、if the water sprinkler system is open D、if the limit switch is on
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