单项选择题

We should take （）to keep the chemicals away from fire.

A. great care
B. some measures
C. fresh water
D. fresh air

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单项选择题
During a fire drill on a vessel, what action is required？（）

A. Start each fire pump
B. Launch and run a lifeboat
C. Inspect fire hoses
D. Close each fire pump
单项选择题
（）are used for lifesaving .

A. Life-jacket and lifebuoy
B. Freeboard
C. Telemeter
D. Draft
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