单选题The emergency bilge suction valve is typically used （）.Ato inject cleaning additives when the bilges are extremely dirtyBwhen the main condenser becomes fouled, in order to provide additional cooling water circulationCto connect the rose box to the independent bilge suctionDif the bilges become flooded and they can not be emptied by any other means
单选题
The emergency bilge suction valve is typically used （）.
A
to inject cleaning additives when the bilges are extremely dirty
B
when the main condenser becomes fouled, in order to provide additional cooling water circulation
C
to connect the rose box to the independent bilge suction
D
if the bilges become flooded and they can not be emptied by any other means
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