单项选择题
A. Life-jacket and lifebuoy B. Freeboard C. Telemeter D. Draft
Oil fires are best extinguished by （）.A. cutting off th...
单项选择题Oil fires are best extinguished by （）.
A. cutting off the supply of oxygen B. removing the fuel C. spraying with water D. adding oxygen
You will extinguish a fire when you remove （）.A.oxygenB...
单项选择题You will extinguish a fire when you remove （）.
A.oxygen B.carbon dioxide C.H2O D.H2
I’m on fire and have dangerous cargo on board. The most...
单项选择题I’m on fire and have dangerous cargo on board. The most urgent assistance (最紧急的援助)in this case would be（） .
A.lifeboat B.medicine C.firefighting D.lifesaving
