[{"title":"( 10 个子文件 778KB ) 第四版概率与统计课后答案","children":[{"title":"概率论与数理统计","children":[{"title":"test5a.pdf <span style='color:#111;'> 80.64KB </span>","children":null,"spread":false},{"title":"test1a.pdf <span style='color:#111;'> 44.71KB </span>","children":null,"spread":false},{"title":"test4a.pdf <span style='color:#111;'> 73.04KB </span>","children":null,"spread":false},{"title":"test3a.pdf <span style='color:#111;'> 168.52KB </span>","children":null,"spread":false},{"title":"test2a.pdf <span style='color:#111;'> 91.47KB </span>","children":null,"spread":false},{"title":"CH2.pdf <span style='color:#111;'> 281.35KB </span>","children":null,"spread":false},{"title":"CH3.pdf <span style='color:#111;'> 125.76KB </span>","children":null,"spread":false},{"title":"CH4.pdf <span style='color:#111;'> 100.61KB </span>","children":null,"spread":false},{"title":"CH1.pdf <span style='color:#111;'> 63.87KB </span>","children":null,"spread":false},{"title":"CH5.pdf <span style='color:#111;'> 105.75KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]