单项选择题
A.transferring heat across an unobstructed space B.heated gases flowing through ventilation systems C.burning liquids flowing into another space D.transmitting the heat of a fire through the ship's metal
Prior to getting underway，the Master or person in charg...
单项选择题Prior to getting underway，the Master or person in charge of a ship must（）.
A.conduct a fire drill B.conduct a boat drill C.log the fore and aft draft marks D.test the emergency generator
Portable foam type fire extinguishers are most effectiv...
单项选择题Portable foam type fire extinguishers are most effective on（）.
A.mattress fires B.oil fires C.wood fires D.All of the above
Portable fire extinguishers must be provided for the ca...
单项选择题Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge（）.
A.only when fully loaded B.if one or more tanks are full C.when transferring cargo D.only when the barge is being towed
