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单选题
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
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单选题Why is it necessary to warn engine room personnel before activating the fixed CO2 system?（）A
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单选题In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must（）.A
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