[{"title":"( 2 个子文件 115KB ) 山东建筑大学离散数学原题","children":[{"title":"离散数学期末试题.pdf <span style='color:#111;'> 105.96KB </span>","children":null,"spread":false},{"title":"2010-2011离散数学A.doc <span style='color:#111;'> 99.00KB </span>","children":null,"spread":false}],"spread":true}]