题目内容
Of all types of commercial internal combustion engines now built, which one usually gives the best performance,and hence it is quite commonly used in marine applications,especially in larger sizes?( )
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What is the application of high-speed diesel engines at sea?( )①They are used for emergency power generation to small applications; ②They are used forelectrical power generation on board ships driven by medium-speed propulsion engines;③They can be used on tugs,ferries and barges, etc. as main engines.
The maintenance period of the engine depends principally on( )
Modern diesel engines are run on( ),a fuel whose grade lies between that of HFO andMDO.
The fuel pump is actuated by means of a cam fitted to the( )
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