【名词&注释】
压缩空气系统(compressed air system)、动力系统(dynamic system)、大功率(high power)、船舶动力装置(marine power plant)
[单选题]船轴不包括()。
A. 推力轴
B. 中间轴
C. 艉轴
D. 曲轴
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学习资料:
[单选题]船舶动力装置(marine power plant)的管路系统,按用途不同可分为()类,即()。
A. 2/动力系统、辅助系统
B. 2/辅助系统、船舶系统
C. 2/动力系统、辅助系统、冷藏系统
D. 3/蒸汽系统、液压系统、压缩空气系统
[单选题]MAN-B&W公司推出的标准废气锅炉系统,主要特点是废气锅炉为单压蒸汽系统;产生饱和蒸汽供加热之需;废气锅炉与燃油辅助锅炉之间有循环水泵并共用一个汽鼓,对其评价可选为()。
A. 具有明显的简单性和低投资成本,又完全满足船舶加热所需蒸汽量的要求
B. 具有明显的简单性和低投资成本,但不能满足船舶加热所需蒸汽量的要求,而需要燃油辅助锅炉补充蒸汽
C. 该废气锅炉系统对排气余热的利用程度已十分充分
D. 该废气锅炉系统适宜于大功率的船舶动力装置(marine power plant)
[单选题]A high temperature alarm or () which will melt is used to guard against the explosion of compressor air pipelines.
A. a flame trap
B. a relief valve
C. a fusible plug
D. a bursting ca
[单选题]Dirt in the fuel oil system of a diesel engine can cause ().
A. clogged filters
B. poor combustion
C. overloading of the diesel
D. shock of fuel line
[单选题]It is important to use only pure lead and to choose a thickness of wire which is greater than the normal allowable clearance but () this amount.
A. not less than twice
B. greater at least twice than
C. not greater twice than
D. larger three times tha
[单选题]The highest pressure in a diesel engine cylinder normally occurs ().
A. at TDC
B. before TDC
C. after TDC
D. during air starting
[单选题]If your propeller is racing in rough weather,you should().
A. decrease your engine speed
B. ignore it
C. increase your engine speed
D. stop your engine until the rough weather passe
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