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單項選擇題

Control of fire on a ship should be addressed（）.

A.immediately after restoring vital services
B.immediately
C.following control of flooding
D.following establishment of fire boundaries

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單項選擇題

Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.

A.flash point
B.upper explosive limit
C.lower explosive limit
D.fire point

單項選擇題

CO₂ extinguishes a fire by（）.

A.cooling
B.smothering
C.chemical action
D.All of the above

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