单项选择题

The foam extinguisher should be used （）.

A. in the end
B. upside down
C. down side
D. on top

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单项选择题
A fire extinguisher is used for （）fires.

A. stopping
B. putting out
C. putting
D. finishing
单项选择题
Who is in charge of oil spilling ? （）

A. Second officer.
B. Third officer.
C. Captain.
D. Bosun.
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