单选题What is NOT a function of the air supply of a covered lifeboat?（）AProvides air for engine combustionBPressurizes water spray systemCProvides air for passenger respirationDPrevents smoke and other noxious fumes from entering craft
单选题
What is NOT a function of the air supply of a covered lifeboat?（）
A
Provides air for engine combustion
B
Pressurizes water spray system
C
Provides air for passenger respiration
D
Prevents smoke and other noxious fumes from entering craft
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