单项选择题

Are all hoses and equipment ready（）?

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

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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
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