正确答案: A

starting

题目：A heater in the circuit facilitates warning of the engine prior to （） by circulating hot water.

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学习资料的答案和解析：

[单选题]船舶动力装置的管路系统，按用途不同可分为（）类，即（）。

2/动力系统、辅助系统

[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（）。

故障率曲线

[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

仅Ⅱ对

[单选题]连杆大小端孔中心线的平行度偏差不应超过（）。

C．0.15mm/m

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

The piston movement

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

its trouble-free life

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

decrease in fuel consumption per horsepower-hour

[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?（）

The boiler vent valves should be opened