单项选择题
A.diesel engine B.stroke C.cycle D.compression ratio
The supercharger takes air out of the surrounding atmos...
单项选择题The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine’s （）.
A.inlet valves B.exhaust valves C.emergency valves D.run-return valves
The successful operation of any engine or machine and （...
单项选择题The successful operation of any engine or machine and （） depend on effective lubrication.
A.their no trouble period B.their freely trouble period C.its free trouble life D.its trouble-free life
The starting of a marine diesel engine is generally car...
单项选择题The starting of a marine diesel engine is generally carried out with the assistance of （）.
A.compressed air B.electricity C.hydraulic oil D.compressing air
