Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.<br>A:directly on flames<br>B:at room temperature<br>C:in an extremely cold climate<br>D:None of the above

Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.
A:directly on flames
B:at room temperature
C:in an extremely cold climate
D:None of the above

出自：海船船员证

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