A heater in the circuit facilitates warning of the engine pr

【名词&注释】

螺旋桨(propeller)、压缩空气系统(compressed air system)、船舶动力装置(marine power plant)、中心线(center line)、故障率曲线(failure rate curve)、系统故障率(system failure rate)

[单选题]A heater in the circuit facilitates warning of the engine prior to （） by circulating hot water.

A. starting
B. stopping
C. to start
D. to sto

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学习资料：

[单选题]船舶动力装置的管路系统，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]大量产品的故障率随时间变化的规律曲线[λ（t）-t）]称为（）。

A. 故障率曲线^{(failure rate curve)}
B. 故障曲线
C. 浴盆曲线
D. A，B，C都对

[单选题]船舶动力装置的主要耗能设备是（）。Ⅰ.螺旋桨；Ⅱ.主机、发电机和辅助锅炉；Ⅲ.空气压缩机

A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ+Ⅱ
D. Ⅰ+Ⅲ

[单选题]连杆大小端孔中心线的平行度偏差不应超过（）。

A. A．0.05mm/m
B. B．0.10mm/m
C. C．0.15mm/m
D. D．0.20mm/m

[单选题]（） usually helps to induce air movement to assist combustion.

A. Cylinder cover
B. Main bearing
C. The exhaust valve
D. The piston movement

[单选题]The successful operation of any engine or machine and （） depend on effective lubrication.

A. their no trouble period
B. their freely trouble period
C. its free trouble life
D. its trouble-free life

[单选题]An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.

A. decrease in maximum cylinder pressure
B. increase in ignition lag
C. decrease in fuel consumption per horsepower-hour
D. decrease in exhaust manifold pressure

[单选题]In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）

A. The safety valve escape piping should be disconnected from the valve body and a blank inserted
B. The boiler vent valves should be opened
C. All handhole/manhole covers should be tightened up as much as possible to preclude any leaks
D. All of the above

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