单项选择题
A fire in electrical equipment should be extinguished by using（）.
A.salt water B.foam C.low-velocity fog D.CO2
单项选择题 A fire in a ballast pumproom can be brought under control with minimal impact on stability by（）.
单项选择题 A fire hose has a（）.
单项选择题 A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind（）.
