单选题Why is gas-freeing rarely required for LPG cargo tanks? （）ALPG is compatible with all cargosBLPG's high oxygen content makes it nonvolatileCCargo tanks are inspected less frequently than on oil tankersDThe cargo tanks are used for one type of cargo only
单选题
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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