Regulations require that tank vessels handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.
- Acofferdams
- Bempty cargo spaces
- Cgas tight bulkheads
- Dareas equipped with power ventilatio
问题
Regulations require that tank vessels
参考解析：
分类：液体散装危险品与IBC规则题库
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