舵杆轴颈表面腐蚀面积＞25%总面积时，应进行（）。

【名词&注释】

环境温度(ambient temperature)、柴油机(diesel engine)、热喷涂(thermal spraying)、总面积(total area)

[单选题]舵杆轴颈表面腐蚀面积＞25%总面积^{(total area)}时，应进行（）。

A. 堆焊后光车
B. 光车后镀铬
C. 热喷涂后光车
D. 光车后镀铁

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学习资料：

[单选题]柴油机冷态即环境温度下测量曲轴臂距差具有测量值（）。Ⅰ.准确；Ⅱ.符合规范；Ⅲ.稳定；Ⅳ.便于操作；Ⅴ.不受温度影响。

A. Ⅰ＋Ⅲ＋Ⅳ
B. Ⅰ＋Ⅳ
C. Ⅱ＋Ⅳ
D. Ⅰ＋Ⅳ＋Ⅴ

[单选题]An interlock in the remote operating valve line stops the valve （） when the engine turning gear is engaged.

A. to open
B. opening
C. open
D. opened

[单选题]Bearing knocks are likely to occur from （）.

A. less clearance
B. dirty lube oil
C. overload
D. bearing wear

[单选题]Generally the function of lubrication is to form of a film of lubricant between any two surfaces that have relative （）, so that surfaces dont get touch with each other.

A. gravity
B. motion
C. ratio
D. density

[单选题]Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will （）.

A. reduce engine horsepower output
B. aid in silencing the exhaust noise
C. increase the mean effective pressure
D. contribute to effective cylinder scavenging

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