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

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

出自：海船船员证

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