单选题After using a CO2 extinguisher on a ship，it should be（）.Aput back in service if some CO2 remainsBhydrostatically testedCretaggedDrecharged
单选题
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
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