单项选择题

A CO₂ extinguisher on a ship which has lost 10% of its charge must be（）.

A.used at the earliest opportunity
B.hydrotested
C.recharged
D.weighed again in one month

相关考题

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单项选择题A branch line valve of a fire extinguishing system on a ship must be marked with the（）.

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B.name of the space or spaces which it serves
C.date of the last maintenance inspection
D.pressure needed to maintain an effective stream at that point

（），as the chemical extinguisher agent，should be used fo...

单项选择题（），as the chemical extinguisher agent，should be used for an electric fire.

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The danger of a charged hose left unattended on deck wi...

单项选择题The danger of a charged hose left unattended on deck with the nozzle open is（）.

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探火与消防设备

A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.

A CO₂ extinguisher on a ship which has lost 10% of its charge must be（）.