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单选题
现场通信系指()之间的通信
A
遇险船和援助单位
B
遇险船和海岸电台
C
遇险船与航空器
D
A+C
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单选题对涉及船舶安全和防止污染的关键性的船上操作,公司应当()。Ⅰ.建立制定有关方案和须知的程序;Ⅱ.与之有关的各项工作,应当明确规定并分配给适任人员;Ⅲ.与之有关的各项工作,保证船上所有人员均能胜任。A
ⅠB
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单选题A mobile offshore drilling unit must display obstruction lights when it is on the waters over the Outer Continental Shelf and is().A
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All of the above
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单选题When flammable liquids are handled in a compartment on a vessel,the ventilation for that area should be().A
operated continuously while vapors may be presentB
operated intermittently to remove vaporsC
available on standby for immediate useD
shut down if an explosive mixture is present
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单选题当利用安装于气缸侧面的振动传感器测取机身与气缸套的振动特性时,()。A
缸套和活塞的磨损越大,两者的振动特性越趋于一致B
缸套和活塞的磨损越小,两者的振动特性越趋于一致C
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单选题拟定大洋航线的主要参考资料有:() Ⅰ、《世界大洋航路》; Ⅱ、每月航路设计图; Ⅲ、《航路指南》; Ⅳ、《航海图书总目录》; Ⅴ、《进港指南》A
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Ⅰ~ⅣD
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单选题Which of the following statements concerning cylinder liner wear is true?()A
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考题
单选题船机零件产生()损坏后可以采用机械加工方法进行修复。A
磨损B
腐蚀C
磨损和腐蚀D
磨损、腐蚀和裂纹
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