A waste heat boiler is installed on some diesel propelled vessels to （）.<br>A:provide steam for emergency propulsion<br>B:provide steam for the turbo-generator<br>C:heat the waste water tanks<br>D:steam for warming engines

A waste heat boiler is installed on some diesel propelled vessels to （）.
A:provide steam for emergency propulsion
B:provide steam for the turbo-generator
C:heat the waste water tanks
D:steam for warming engines

出自：海船船员证

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