正确答案: B

before TDC

题目：For an ordinary four-stroke engine the inlet valves open （）

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学习资料的答案和解析：

[单选题]船舶动力装置达到规定可靠性的有力保证是（）。

提高轮机管理人员的水平

[单选题]在平台上用Ⅴ形铁支承活塞杆，检查活塞与活塞杆同轴度时，活塞转动一周，测得（）径向跳动即为同轴度误差。

活塞外圆

[单选题]合成材料艉轴承中以（）艉轴承应用日益增多。

赛龙

[单选题]除镍铝青铜桨外，其他材料的螺旋桨桨叶热校正之后应进行（）处理。

退火

[单选题]The process of loop scavenge is that the exhaust will be via ports （） the air ports and controlled by the same piston.

adjacent to

[单选题]With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to （）.

all of the above

[单选题]The rate of heat transfer in a water-tube auxiliary boiler can be increased by （）.

installing fins on the firesides of water-tubes