单项选择题

Automatic mechanical ventilation shutdown is required for CO₂ systems protecting the（）.

A.machinery spaces
B.cargo compartments
C.living quarters
D.galley

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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

单项选择题

A.put back in service if some CO₂ remains
B.hydrostatically tested
C.retagged
D.recharged

单项选择题

A.CO₂
B.fresh air
C.the tested compartment's air
D.water

Automatic mechanical ventilation shutdown is required for CO2 systems protecting the（）.