正确答案: B

仅Ⅱ对

题目：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

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学习资料的答案和解析：

[单选题]船舶在营运中，动力装置的维护费占船舶总费用的比例很大，最大可超过（）%.

50

[单选题]对于可靠性和可靠度的表述，不能采用的是（）。

可靠性与可靠度都有严格的定义，任何时候都不可混同起来

[单选题]中间轴承的布置如果数量多、间距小（）。Ⅰ.则轴线变形的牵制作用增强；Ⅱ.会使轴承增加附加负荷

Ⅰ+Ⅱ

[单选题]The development of （） has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.

oils

[单选题]To avoid scavenge fires （） the engine timing and equipment maintenance should be correctly carried out.

occurring

[单选题]Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）

A defective after-cooler

[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.

775 RPM

[单选题]In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.

bottom of the lube oil sump