正确答案: D
combustible gas indicator
题目:Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.
解析:D
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流质饮食
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你船应给他船让路
[单选题]Crankcase explosions in propulsion diesel engines result from
the ignition of unburned fuel and air in the crankcase
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changing filter elements would not interrupt engine operation
[单选题]开始装卸作业前,应在甲板上配备()能正常工作的灭火器,两条消防皮龙接妥,一条是连接在消防水管路,另一条连接在泡沫管路。其他消防设备应处于随时可用的状态
2只
[单选题]The objectives of the ISM Code are to ensure ①safety at sea②prevention of human injury or loss of life③avoidance of damage to the marine environment and to property
①②③
[单选题]STCW规则中规定,瞭望人员和舵工的职责是分开的,下列说法正确的是( )。
在某些小船上,在操舵的位置上具有四周无遮挡的视野并且没有夜视障碍或其他保持正规瞭望的妨碍,则舵工可以作为瞭望人员