未知题型
Identifytwocorrectstatementstocompletethesentance.InaCoherenceimplementation，itisabestpracticetoimplementPortableObjectonallcustomerobjectsbecause：（）
- A.itleveragesJava’sbuilt-inserialization
B.itprovidesamoreefficientserializationoftheobject
C.itallowstheobjecttobesharedacrossapplications
D.itallowstheobjecttobesharedacrossprogrammingplatforms
【参考答案】
B, D
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