通常艉轴管装置主要由（）构成。Ⅰ.艉轴管本体，Ⅱ.衬套，Ⅲ.轴承衬

【名词&注释】

直线度误差(straightness error)

[单选题]通常艉轴管装置主要由（）构成。Ⅰ.艉轴管本体，Ⅱ.衬套，Ⅲ.轴承衬，Ⅳ.艉轴承，Ⅴ.密封装置。

A. Ⅱ＋Ⅲ
B. Ⅰ＋Ⅱ＋Ⅳ
C. Ⅰ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅲ＋Ⅳ

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学习资料：

[单选题]舵杆弯曲变形时直线度误差＞2mm/m，允许采用（）修复。

A. 冷校直
B. 热校直
C. 加热-机械校直
D. 机械校直

[单选题]Exhaust temperature increases in all cylinders, the possible cause may be（）(1) increased scavenging air temperature(2) air in fuel pumps and fuel valves(3) fouling of air and gas passages

A. (1)+(2)
B. (1)+(3)
C. (2)+(3)
D. (1)+(2)+(3)

[单选题]The common method of applying oil to the cylinder walls is by means of small pump assembled in units, known as （）.

A. mechanical lubricator
B. lubrication function
C. forced feed system
D. bearing lubricatio

[单选题]In an auxiliary boiler steam and water system, the highest pressure will be in the （）.

A. steam stop valve
B. dry pipe
C. feedwater system
D. generating tube

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