Which of the following gases represents the greatest threat to personnel safety in an engine room where the exhaust is leaking from a diesel engine?（）<br>A:Carbon dioxide<br>B:Carbon monoxide<br>C:Carbon trioxide<br>D:Hydrogen sulfide

Which of the following gases represents the greatest threat to personnel safety in an engine room where the exhaust is leaking from a diesel engine?（）
A:Carbon dioxide
B:Carbon monoxide
C:Carbon trioxide
D:Hydrogen sulfide

出自：海船船员证

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