单选题The primary task of the compressed air system is to deliver the starting air necessary for （）Astarting the MEBstarting the emergency electric alternatorCdriving the main turbineDdriving the turbocharger
单选题
The primary task of the compressed air system is to deliver the starting air necessary for （）
A
starting the ME
B
starting the emergency electric alternator
C
driving the main turbine
D
driving the turbocharger
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