艉机舱船装载后将会引起曲轴轴线发生（）变形，臂距差的大小和方

【名词&注释】

可达性(accessibility)、注意事项(points for attention)、通用性(generality)、可互换性(interchangeability)、轴承座孔(bearing saddle bore)

[单选题]艉机舱船装载后将会引起曲轴轴线发生（）变形，臂距差的大小和方向呈（）变化。

A. A．弯曲/正值增大
B. B．首端塌腰/正值增大
C. C．首端上拱/负值增大
D. D．拱腰形/负值增大

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学习资料：

[单选题]维修性包括（）。Ⅰ.易拆卸性、可达性；Ⅱ.可还原性、通用性；Ⅲ.可互换性、适检性

A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ

[单选题]换新薄壁轴瓦时，（）的操作是错误的。

A. A．不可拂刮合金层
B. B．不可使用调节垫片
C. C．把轴瓦压入轴承座孔^{(bearing saddle bore)}
D. D．通过修刮瓦口调节瓦口扩张量

[单选题]废气涡轮增压器使柴油机的功率增加（）倍。

A. 0.5
B. 1
C. 1.5
D. 2

[单选题]更换艉轴承填料时的注意事项中不包括（）。

A. A．填料长度适当，不许搭接或过短
B. B．各道填料的接缝要错开
C. C．压盖安装后应前后移动灵活、无卡阻
D. D．按要求依次上紧压盖螺母

[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]The lower end of each piston rod is reduced in diameter to fit a bore in （）, this being secured to the piston rod by a nut.

A. the crank-web
B. the connecting rod
C. the main bearing
D. the cross-head

[单选题]The piston moving up and down keeps the crankshaft （）.

A. to revolve
B. revolved
C. revolving
D. to be revolved

[单选题]Telescopic pipes to the piston of a large slow-speed main propulsion diesel engine are designed to prevent （）.

A. excessive crankcase pressure
B. excessive lube oil temperature
C. contamination of the lube oil by water
D. contamination of the cooling water by lube oil

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