正确答案: D

20%

题目：轴系校中完毕，要求实测中间轴承的负荷，允差为（）。

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学习资料的答案和解析：

[单选题]轴系两端轴的同轴度是通过测量轴系两端轴法兰上的（）来衡量。

总偏中值

[单选题]桨叶上A区位于桨叶压力面0.4R以内范围，该区域内的缺陷一般不允许（）修理。

焊补

[单选题]桨叶经焊补修理后，为保证焊补质量应进行（）等处理。Ⅰ.磨光；Ⅱ.着色探伤；Ⅲ.测螺距；Ⅳ.静平衡试验；Ⅴ.退火。

Ⅰ＋Ⅱ＋Ⅴ

[单选题]As for a diesel engine, lack of combustion air may be due to （）.

fouling turbine

[单选题]The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）

higher at sea than while maneuvering

[单选题]The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by （）

the operation of the thermostatic valve

[单选题]A towing vessel’s capability is BEST measured by horsepower，bollard pull，maneuverability and（）.

displacement