单项选择题

In the construction of a diesel engine, what is the purpose of end plates?（）

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

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A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the （）.

A.temperature of the exhaust gases
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