单项选择题
A.head -lB.wc -nC.wc -lD.head -n
A./usr/local/src/hadoop/confB./usr/local/src/hadoopC./usr/local/src/hadoop/etc/hadoopD./usr/local/src/hadoop/share/hadoop
A./hive/warehouseB./user/hive/warehouseC./usr/hive/warehouseD./usr/hive/
A.http//master50070B.http://yarn:8088C.http://yarn:50070D.http://master:8088
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