Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）..

第1题

[单选题] One of the factors limiting the amount of load which can be put on a modern marine diesel engine is the （）

A、governor sensitivity B、exhaust temperature C、fuel injection pressure D、speed of the can shaft

第2题

[] Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is（）

A、A.a combination of constant volume and constant pressure B、B.a combination of constant temperature and constant pressure C、C.entirely constant pressure D、D.entirely constant volume

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第3题

[单选题] “This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density（）, drives the compressor directly（）

A、a modern diesel engine；a turbine wheel B、a modem diesel engine；exhaust gases C、a compressor；an exhaust gas turbocharger D、a compressor；a turbine wheel

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第4题

[单选题] The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.

A、principle B、principal C、cause D、case

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第5题

[单选题] In some modern large diesel engines, which of the following is used as the support for the main bearings?（）

A、Bedplate B、Block C、Base D、Sump

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第6题

[单选题] Cylinders of marine diesel engines are normally cooled by （）.

A、sea water B、fine mineral oil C、sanitary water D、fresh water