单项选择题 Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）

单项选择题 The ship emergency plan item should not include （） Ⅰ.ifesaving,fire fighting, leakage blocking, abandon ship Ⅱ.irst aid Ⅲ.ntegration emergency

单项选择题 The alarm signal for engine room catching fire is a blast of random bell follow by （）