单选题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?（）ACarbon dioxideBCarbon monoxideCCarbon trioxideDHydrogen sulfide
单选题
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
参考解析
解析：
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