单项选择题

Why is it necessary to warn engine room personnel before activating the fixed CO2 system?
A.To make them aware there is a fire
B.To let them know they should leave the engine room
C.To prevent possible injury from frostbite
D.To make them aware that ventilation will automatically stop

A.To
B.To
C.To
D.To

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单项选择题

单项选择题

单项选择题

Why is it necessary to warn engine room personnel before activating the fixed CO2 system?A.To make them aware there is a fireB.To let them know they should leave the engine roomC.To prevent possible injury from frostbiteD.To make them aware that ventilation will automatically stop