【名词&注释】
螺旋桨(propeller)、轴系理论中心线、柴油机动力装置(diesel power plant)
[单选题]轴系理论中心线是()的定位安装基准。
A. 螺旋桨
B. 舵系
C. 中间轴
D. 主机
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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]船舶的有效功率与收到功率之比为推进效率。已知船舶有效功率为4500kW,推进效率为0.70,则螺旋桨收到功率为()kW。
A. 9000
B. 6430
C. 7500
D. 7350
[单选题]短轴系是指具有()或()中间轴的轴系。
A. 一节/两节
B. 一节/无
C. 两节/三节
D. 10m/小于10m
[单选题]水润滑艉轴铜套过度磨损后光车修理时,铜套厚度应()。
A. ≥0.01d+2mm
B. ≥0.015d+3.5mm
C. ≥0.02d+5mm
D. ≥0.03d+7.5mm
[单选题]Charging is the filling of the engine cylinder with a supply of () for compression.
A. water
B. fresh air
C. fuel oil
D. ga
[单选题]The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its ().
A. BDC
B. TDC
C. BBDC
D. ATDC
[单选题]The selection of an oil depends () on the operating conditions, the design of the engine and the type of fuel to be burned.
A. to a great extent
B. on a great extent
C. on mainly
D. on only
[单选题]The fuel injection system is very important, so any trouble of it will () the operation of the main engine.
A. be affected
B. affect
C. be effected
D. effect
[单选题]Diesel engines obtain combustion air through turbo chargers,blowers,or().
A. air starters
B. carburetors
C. natural aspiration
D. air receiver
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