正确答案: A

after TDC

题目：For an ordinary four-stroke diesel engine the exhaust valves close （）.

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学习资料的答案和解析：

[单选题]已知6300ZC型船用柴油机气缸套最大内径增量为1.2mm，则最大缸径为（）。

301.2mm

[单选题]液压拉伸器的液压系统中的液压油绝对不可使用（）。Ⅰ.液压油；Ⅱ.系统润滑油；Ⅲ.高级润滑油；Ⅳ.气缸油；Ⅴ.透平油。

Ⅱ＋Ⅳ

[单选题]Dirt in the fuel oil system of a diesel engine can cause （）.

clogged filters

[单选题]The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.

wet liner

[单选题]In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.

piston