航海英語液體散裝危險品與IBC規(guī)則單項選擇題每日一練(2019.01.21)

來源：考試資料網(wǎng)

1 Inerting means（）.

2 Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production plant. This valve must close automatically upon（）.

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3 A 30，000 DWT tanker is required to have an IOPP certificate when（）

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4 The component in an inert gas system used for cleaning the gas of solid and sulphur combustion products，while simultaneously cooling the inert gas，is called the（）.

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5 A flame screen（）.

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