Never extinguish oil and electrical fires with （）.……

单项选择题Water is used to put out （）.

A. oil fire
B. electrical fire
C. common fire
D. special fire

单项选择题Are all hoses and equipment ready（）?

A. for use
B. to use
C. in use
D. of use

单项选择题The foam extinguisher should be used （）.

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

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.