单项选择题
A.smoke B.rate of temperature rise C.ionized particles D.all of the above
On a tank vessel, which of the following substances wou...
单项选择题On a tank vessel, which of the following substances would be burning in a class "B" fire?（）
A.Oil B.Wood C.Rags D.Electrical wiring
A class "B" fire would most likely occur in the （）.A.ma...
单项选择题A class "B" fire would most likely occur in the （）.
A.main switchboard B.engine room bilge C.breathing compartment D.electric fresh water transfer pump
The International Oil Pollution Prevention Certificate ...
单项选择题The International Oil Pollution Prevention Certificate is valid for a period of （）.
A.one year from the date of issue B.two years from the date of issue C.three years from the date of issue D.four years from the date of issue
