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

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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
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
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