Bring your immersion suit. Meet in front of the （）.

单项选择题Never extinguish oil and electrical fires with （）.

A. water
B. foam extinguisher
C. CO₂ extinguisher
D. portable extinguisher

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