A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.<br>A:monkey<br>B:donkey<br>C:waste heat<br>D:main

A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.
A:monkey
B:donkey
C:waste heat
D:main

出自：海船船员证

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