【名词&注释】
含氧量(oxygen content)、经济性(economy)、船舶动力装置(marine power plant)、惰性气体(inert gas)、之所以(the reason that)
[单选题]惰性气体系统以任何所需的流速想液货舱输送惰性气体时，在惰性气体供气管内的含氧量（按容积计算）应不超过_________
A. 2％
B. 3％
C. 5％
D. 10％
查看答案&解析
举一反三：
[单选题]Cold weather starting of a diesel engine is more difficult than warm weather starting due to
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
[单选题]下面哪些船舶处所不须装备感烟式探测器？
A. 起居舱室
B. 机舱
C. 货舱
D. 以上均是
[单选题]下列有关船舶缺陷处理的叙述哪些正确?( )。①开航前纠正缺陷;
A. ②禁止船舶进港;
B. ③责令船舶驶向指定区域;
C. ④驱逐船舶出港。
D. ①②③
E. ①②③④
F. ①③④
G. ②④
[单选题]推进装置的推进效率之所以(the reason that)仅能评定各类船舶动力装置的经济性是因为仅考虑( )。
A. 推进装置的燃油消耗
B. 动力装置的燃油消耗
C. 主机的燃油消耗
D. 主机的燃油消耗及余热利用
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