As to the piston cooling, of the following, which statement is not true?（） -题库考试答案搜索网

As to the piston cooling, of the following, which statement is not true?（）

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2022-06-30 05:23

A、Because the piston is exposed to very high temperature, it must be cooled
B、The lower the piston cooling temperature is, the better it is
C、Both water and lube oil can be used as coolant
D、One of the piston cooling methods is vibration cooling, with better effect

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标签：船舶动力装置海船船员考试

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The cooling of the piston is carried out by circulating （） across the underside of the crown and inside the ring belt or through specially shaped passages.

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