单项选择题
A.the single hook at the top of the raft B.two lines passed under the raft C.the towing bridle D.All of the above
After using a CO2 extinguisher on a ship，it should be（）...
单项选择题After using a CO2 extinguisher on a ship，it should be（）.
A.put back in service if some CO2 remains B.hydrostatically tested C.retagged D.recharged
After each reading of an oxygen indicator，the instrumen...
单项选择题After each reading of an oxygen indicator，the instrument should be purged with（）.
A.CO2 B.fresh air C.the tested compartment's air D.water
Actuating the CO2 fixed system causes the shutdown of t...
单项选择题Actuating the CO2 fixed system causes the shutdown of the（）.
A.fuel supply B.exhaust ventilation C.supply and exhaust ventilation D.mechanical and natural ventilation
