正确答案: C

engine

题目：Cooling of engine is achieved by circulation a cooling liquid around internal passages within the （）.

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学习资料的答案和解析：

[单选题]将主轴颈下沉量视为主轴承下瓦的磨损量是由于（）。

忽略曲轴主轴颈的磨损量

[单选题]测量曲轴臂距差时，曲轴旋转一周，可依次测得臂距值为（）。

L上、L右、L下、L左

[单选题]常见气阀的损伤有（）等。Ⅰ.气阀阀盘锥面；Ⅱ.阀面的烧伤与高温腐蚀；Ⅲ.阀盘与阀杆的裂纹；Ⅳ.阀杆的弯曲变形；Ⅴ.阀杆的磨损。

Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ

[单选题]In a naturally aspirated diesel engine, the volume of air intake is directly related to engine （）.

valve size

[单选题]In a closed diesel engine freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the （）.

thermostatic bypass valve

[单选题]For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.

oil spray

[单选题]Waterside scale in a fire-tube boiler may cause （）.

overheated tube

[单选题]Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.

engine room control station

[单选题]If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.

compression pressures are below normal