带有匙形键槽且根部有适当圆角的单螺旋桨轴或艉轴，其检验间隔期

【名词&注释】

螺旋桨轴(propeller shaft)、螺旋桨桨叶(propeller blades)、柴油机动力装置(diesel power plant)

[单选题]带有匙形键槽且根部有适当圆角的单螺旋桨轴或艉轴，其检验间隔期规定为（）。

A. 2年
B. 3年
C. 4年
D. 5年

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学习资料：

[单选题]巨大型船舶对动力装置的重量和尺度没有特别要求，一般采用（）柴油机动力装置。

A. 低速机
B. 中速机
C. 高速机
D. 多机多桨

[单选题]曲轴与艉轴的同轴度误差的参数是（）。

A. δ总、φ总
B. δ、φ
C. δ总、φ
D. δ、φ总

[单选题]螺旋桨桨叶0.4R以外的裂纹可采用（）修理。

A. 修磨
B. 波浪键扣合
C. 完善的工艺焊补
D. 粘接

[单选题]The sequence of parts in a generally used fuel oil supply system for a main engine is （）(1)tanks in the double bottom(2)centrifuges(3)service tank(4)settling tank(5)viscosity regulator

A. (1)-(2)-(4)-(3)-(5)
B. (1)-(4)-(2)-(3)-(5)
C. (1)-(3)-(2)-(4)-(5)
D. (1)-(5)-(4)-(2)-(3)

[单选题]With the shell and cap assembled as for running, a check must be made that the clearance between the cap and the housing （）.

A. has a nip
B. is large enough
C. is zero
D. are suitable

[单选题]Directional intake ports in diesel engines are used to （）.

A. reduce air charge turbulence
B. induce air swirl
C. deflect hot combustion gas away from the valves
D. oppose the effects of piston induced squish

[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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