【名词&注释】
螺旋桨(propeller)、不平衡(unbalance)、船舶动力装置(marine power plant)、静平衡(static balance)、测量法(measurement)、相互配合(interwork)、弹簧测力计(spring loaded thrust meter)
[单选题]船舶动力装置中的辅助装置是()。
A. 特指发电装置
B. 特指辅助锅炉装置
C. 除推进装置以外的其他产生能量的装置
D. B+A
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学习资料:
[单选题]零件上的微小裂纹可采用修锉、打磨的方法予以消除,若裂纹深度达到裂纹所在壁厚的()时,则应停止修锉、打磨,改用其他的方法修理或报废。
A. A.5%
B. B.3%
C. C.2%
D. D.1%
[单选题]拆卸机器时不必()。
A. 拆不开的零部件不得强拆
B. 对拆下的零件进行磁粉探伤
C. 相互配合(interwork)的零件应做好标记
D. 拆开的孔口应遮盖封堵,避免损伤或进入异物
[单选题]实测中间轴承负荷的常用方法是()。
A. 弹簧测力计(spring loaded thrust meter)法
B. 顶举法
C. 电阻应变片测量法
D. A或B或C
[单选题]某螺旋桨半径为2m,质量为800kg,经静平衡实验测附加重物的质量为2kg,其中系数K为1.5,请问该螺旋桨允许的不平衡质量为()。
A. 0.4kg
B. 0.8kg
C. 0.6kg
D. 1kg
[单选题]The plunger in the fuel injector pump, usually operated by a (), is driven up and down when working.
A. crankshaft
B. camshaft
C. piston rod
D. rack and pinio
[单选题]The process to remove exhaust gases by blowing in fresh air is called ().
A. charging
B. supercharging
C. starting
D. scavenging
[单选题]The selection of an oil from the () depends to a great extent on the operating conditions, the design of the engine and the type of fuel to be burned.
A. commercially available
B. commercially
C. commercial available
D. commerce available
[单选题]There is an injection pump for each cylinder, which is usually operated once every cycle by () on the camshaft.
A. a gear
B. a cam
C. a rod
D. a miler
[单选题]A magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of().
A. water
B. babbitt
C. iron or steel
D. acid
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