Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）<br>A:The tank must be gas freed<br>B:The tank must be ballasted<br>C:The tank must be vented to the atmosphere<br>D:The bypass valve must also be closed

Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
A:The tank must be gas freed
B:The tank must be ballasted
C:The tank must be vented to the atmosphere
D:The bypass valve must also be closed

出自：海船船员证

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