A flame screen（）.
- Apermits the passage of vapor but not of flame
- Bprevents the passage of flammable vapors
- Cprevents inert gas from leaving a tank
- Dpermits vapors to exit but not enter a tank
问题
A flame screen（）.
参考解析：
分类：液体散装危险品与IBC规则题库
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