多项选择题
Spark的优势有哪些？（）
A.完全依赖Hadoop MapReduce框架获得海量大数据计算能力
B.Spark对小数据集能达到亚秒级的延迟
C.Spark提供了不同层面的灵活性数据并行的范式
D.内存缓存、流数据处理、图数据处理等更为高级的数据处理能力
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