单项选择题

A fire starts on your vessel while refueling. You should FIRST（）.

A.stop the ventilation
B.sound the general alarm
C.determine the source of the fire
D.attempt to extinguish the fire

点击查看答案&解析

上一题目录下一题

单项选择题

A.low-velocity fog only
B.a solid stream only
C.a solid stream and foam
D.a solid stream and fog

单项选择题

A.reading the gage pressure
B.weighing the extinguisher
C.discharging a small amount of CO₂
D.seeing if the seal has been broken

单项选择题

A.used at the earliest opportunity
B.hydrotested
C.recharged
D.weighed again in one month