[{"title":"( 6 个子文件 351KB ) 组合理论及其应用答案","children":[{"title":"组合理论习题解答","children":[{"title":"习题2.doc <span style='color:#111;'> 149.00KB </span>","children":null,"spread":false},{"title":"习题5.doc <span style='color:#111;'> 223.00KB </span>","children":null,"spread":false},{"title":"习题解答封面.doc <span style='color:#111;'> 23.50KB </span>","children":null,"spread":false},{"title":"习题1.doc <span style='color:#111;'> 258.00KB </span>","children":null,"spread":false},{"title":"习题4.doc <span style='color:#111;'> 370.00KB </span>","children":null,"spread":false},{"title":"习题3.doc <span style='color:#111;'> 268.50KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]