When reentering an engine room that has been flooded with CO2, the investigating team should initially（）. A:leave the access door partially open B:enter from the lowest level C:enter from the highest level D:attempt to operate machinery

When reentering an engine room that has been flooded with CO₂, the investigating team should initially（）.
A:leave the access door partially open
B:enter from the lowest level
C:enter from the highest level
D:attempt to operate machinery

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