问题
单项选择题
The principal personnel hazard unique to Halon extinguishers is（）.
A.displacement of oxygen
B.skin irritation
C.inhaling toxic vapors
D.eye irritation
答案
参考答案：C
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The principal personnel hazard unique to Halon extinguishers is（）.
A.displacement of oxygen
B.skin irritation
C.inhaling toxic vapors
D.eye irritation
参考答案：C