Main diesel engine control can be obtained by the bridge （）<br>A:at any time<br>B:only after the engine room control station is switched to ‘bridge control’<br>C:whenever the secondary station is switched to ‘bridge control’<br>D:whenever the engine side control station is switched to ‘bridge control’

Main diesel engine control can be obtained by the bridge （）
A:at any time
B:only after the engine room control station is switched to ‘bridge control’
C:whenever the secondary station is switched to ‘bridge control’
D:whenever the engine side control station is switched to ‘bridge control’

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