船舶舵系是实现船舶（）等操纵的航向控制装置。Ⅰ.转向；Ⅱ.前进；

【名词&注释】

气缸套(cylinder liner)、表面耐磨性(surface wearability)、填料函式

[单选题]船舶舵系是实现船舶（）等操纵的航向控制装置。Ⅰ.转向；Ⅱ.前进；Ⅲ.后退；Ⅳ.掉头；Ⅴ.直航。

A. Ⅰ＋Ⅱ
B. Ⅰ＋Ⅳ＋Ⅴ
C. Ⅲ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅱ＋Ⅲ

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学习资料：

[单选题]强化气缸套内圆表面的方法主要有（）等工艺，使表面耐磨性、抗咬合性提高来防止拉缸事故。Ⅰ.松孔镀铬；Ⅱ.镀铁；Ⅲ.离子氮化；Ⅳ.硬质镀铬；Ⅴ.喷钼。

A. Ⅰ＋Ⅱ＋Ⅴ
B. Ⅰ＋Ⅲ
C. Ⅱ＋Ⅳ＋Ⅴ
D. Ⅰ＋Ⅲ＋Ⅴ

[单选题]如果采用（）时，底脚螺栓可以不用紧配螺栓。

A. 活动垫块
B. 固定垫块
C. 楔形垫块
D. 环氧垫块

[单选题]水润滑艉轴承首端设置填料函式密封装置是为了（）。

A. 防止艉轴承过分冷却
B. 防止海水流入机舱
C. 使艉轴承润滑均匀
D. 减少艉轴承磨损

[单选题]Keep compartment （） as the gas given off can be dangerous.

A. well ventilated
B. well clean
C. in good order
D. more room

[单选题]The inner part of the condenser should be cleaned with （）.

A. gas oil
B. diesel oil
C. chemical compound
D. Freon-12

[单选题]A change in the degree of fuel atomization in a diesel engine would most greatly affect （）.

A. air turbulence
B. fuel penetration
C. fuel spray angle
D. fuel injection rate

[单选题]When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.

A. filter to remove the fuel oil
B. use the settler to remove the fuel oil
C. remove the fuel oil by centrifuging
D. drain and then renew the lube oil supply

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