A、the main engine in the stand-by condition
B、auxiliary machinery in the stand-by condition
C、dynamical equipments in the stand-by condition and could be used immediately
D、A and B
更多“The purpose of engine stand-by is that （）”相关的问题
A、A.counterbalance the crank throws on the crankshaft B、B.keep the engine running smoothly between power stroke C、C.provide a belt-driving surface for the operation of auxiliary machinery D、D.prevent the engine from overspeeding
A、provide energy to operate the engine between power impulses B、neutralize the primary inertia force of the crankshaft C、reduce the shock of starting loads on the main bearings D、prevent the engine from operating at critical speed
A、testing for the mechanical load and the thermal load B、inspecting thermal and mechanical condition of the engine C、inspecting each system and exhaust temperature D、testing for compress pressure and explosion pressure
A、To provide accessibility to the cylinder liners B、To add stability to the engine block C、To add rigidity to the block and a surface for attaching other parts D、To make a surface for the base
A、reduce lube oil temperature B、raise exhaust temperature reduce C、excessive heating of engine room D、reduce load on cooling water pump
A、produce the heat for ignition B、decrease injection lag C、increase ignition delay D、aid in exhausting burnt gases
A、compensate for low oil level B、increase governor promptness C、prevent governor hunting D、limit engine load
A、to reduce heat stress B、to reduce low temperature corrosion C、to improve firing and starting performance D、fuel saving
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