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(2019.01.24)

來源：考試資料網(wǎng)

1 In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.

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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 Access to a cargo pumproom on a tank vessel carrying grades A，B，C or D liquid cargoes shall be（）.

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4 The number or name of a tank barge shall be（）.

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5 What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）

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