Which of the following forms of energy is demonstrated through the process of combustion?（）
The lowest temperature at which fuel combustion becomes self-sustaining in the presence of a source of ignition, is defined as the （）
Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?（）
Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?（）
Successful combustion inside the cylinders of a diesel engine is dependent upon （）.
The air required for combustion is taken from the engine room through a filter fitted on the turbochargerThis reduces the risk for too and contamination of the combustion air（）
The combustion of larger molecules,（）have multiple carbon-carbon bonds involves a more complex series of reactions.
Which of the following is a factor of fuel oil almost having nothing to do with the formation of combustion products?（）
Fires resulting from spontaneous combustion are usually caused by the improper disposal of（）.
Diesel engine blow-by is the leakage of combustion gases past the （）
Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）
Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）
The most likely place for a fire to start through the process of spontaneous combustion is in （）.
Black smoke exhausting from an operating diesel engine is an indication of poor combustion which may be caused by （）
What determines the number of events occurring in a cycle of operation in an internal combustion engine?（）
Gas exchange, which is a basic part of the cycle of an internal combustion engine, is（）
Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.
Which of the lists forms of heat transfer, if any, is illustrated by the flow of combustion gases through a boiler?（）
A combustible gas indicator meter is calibrated to read the percentage of（）.
How does combustion air enter the cylinder of a two-cycle diesel engine?（）
The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a （）.
A pumproom is suspected of accumulating gases after a ventilation machinery breakdown. Where should the combustible gas indicator case be placed when testing the pumproom atmosphere for combustible gases? （）
The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）
Anvalve which allows the fresh charge of fuel／air into the combustion chamber。
