水润滑艉轴铜套过度磨损后光车修理时，铜套厚度应（）。

【名词&注释】

喷油泵(fuel injection pump)、螺旋桨桨叶(propeller blades)、轮机员(engineer)、生产厂家(manufacturer)

[单选题]水润滑艉轴铜套过度磨损后光车修理时，铜套厚度应（）。

A. ≥0.01d＋2mm
B. ≥0.015d＋3.5mm
C. ≥0.02d＋5mm
D. ≥0.03d＋7.5mm

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学习资料：

[单选题]在重新组装回油孔调节式喷油泵时，为了保证齿条刻度指示的零位与柱塞套筒的实际零位（油泵柱塞直槽对准套筒上的回油孔）一致，生产厂家^{(manufacturer)}在（）之间做了对中记号，轮机员必须将两者对齐。

A. 齿条和齿套
B. 柱塞和套筒
C. 齿条与泵体
D. 齿条与套筒

[单选题]轴与桨法兰连接者或无键连接者，检验间隔期为（）。

A. 2年
B. 3年
C. 4年
D. 5年

[单选题]艉轴铜套损坏的主要形式有（）。Ⅰ.腐蚀；Ⅱ.裂纹；Ⅲ.过度磨损；Ⅳ.套合松动；Ⅴ.接缝不良。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅳ
C. Ⅱ+Ⅲ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅲ＋Ⅳ

[单选题]依螺旋桨桨叶上某半径截面上的局部螺距可计算出（）。

A. 桨叶螺距
B. 截面螺距
C. 总平均螺距
D. 部分螺距

[单选题]“Stand by an engine” means （）

A. “prepare to stop the engine”
B. “assemble an engine on its bedplate”
C. “make an engine ready for starting”
D. “dismantle an engine&rdquo

[单选题]Dirty oil must be （） before being used again.

A. mixed with clean oil
B. purified
C. heated
D. strained

[单选题]The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.

A. BDC
B. TDC
C. BBDC
D. ATDC

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

A. oil spray
B. oil bath
C. oil control rings
D. drilled passage through the camshaft

[单选题]Lube oil cannot be efficiently filtered if its （）.

A. viscosity is too low
B. temperature is too low
C. pump discharge pressure is higher than the systems pressure
D. pump capacity is greater than the systems need

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