Why is gas-freeing rarely required for LPG cargo tanks? （）<br>A:LPG is compatible with all cargos<br>B:LPG's high oxygen content makes it nonvolatile<br>C:Cargo tanks are inspected less frequently than on oil tankers<br>D:The cargo tanks are used for one type of cargo only

Why is gas-freeing rarely required for LPG cargo tanks? （）
A:LPG is compatible with all cargos
B:LPG's high oxygen content makes it nonvolatile
C:Cargo tanks are inspected less frequently than on oil tankers
D:The cargo tanks are used for one type of cargo only

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