正确答案: A
机舱的长度
题目:发动机的长度可决定()。
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学习资料的答案和解析:
[单选题]采用贮备可以提高动力装置的可靠性,但是亦有可能使可靠性反而下降,这是因为()。Ⅰ.散热面积小,使温度大幅度上升;Ⅱ.振动、冲击因素影响备件寿命
Ⅰ,Ⅱ都对
[单选题]废气锅炉烟垢着火的热量主要传导给(),使锅炉系统不能正常工作,甚至损坏锅炉。
A+B+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()。
0.6kg
[单选题]舵系固定件的中心线与船舶基线垂直,垂直度偏差不大于()。
1.0mm/m
[单选题]Increasing the temperature of a fuel will reduce its ().
viscosity
[单选题]The conclusion that mechanical efficiency is always () 100 percent is correct.
less tha
[单选题]The lower end of each piston rod is reduced in diameter to fit a bore in the (), this being secured to the piston rod by a nut.
cross-head
[单选题]In the combustion chamber, the part whose surface is exposed to the highest temperature is the ().
piston
[单选题]The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as ().
brake horsepower